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I also bought their kit and found it fit pretty well. There were no istructions except for the drive shaft loop and it took awhile to figure out what the bushings were for until I called up about the front core support. They were to replace the front rubber bushings in the leaf springs. Make sure you specify whether or not you will be using a stock radiator as the front core support needs a 2-1/2" spacer kit to make it fit. They assumed I was replacing the radiator with a modine style radiator and never sent them even after I asked. I fabricated my own and was glad I did as I had to do them in two peices so they could be welded around the back where there is no access.
Sorry to bring an old post back to life but I am curious about this spacer kit. I just got my core support from them and was test fitting it tonight. I am leaving the factory support in and cutting as required then welding to the tubular support and am using a top and bottom tank radiator like factory. Do you have any pics of your custom kit you made?
I don't remember cutting anything when I installed their lower tubular rad support on 69 Dart last year,I tucked it inside the stock rad support. Not sure how it would compare to Challenger.
I have a '72 Challenger and I called them when I noticed the possible conflict. They said that the stock radiator would not go back into the same location unless the 2" extensions were used and the support went under the stock core support. They suggested getting an aftermarket modine style radiator which is what a lot of guys do anyway. If you look at any Challenger core support it closely surrounds the bottom of the radiator which is evident when you go to drain it and the coolant usually winds up all over the place. They were going to send the extensions to me at no charge but they never arrived so I fabricated my own.
I am running the Champion radiator from Gary so maybe that is enough difference as I am not seeing a clearance problem on mine. Seems that a 2" extension would lower it way too much. As it looks now I can cut the front and sides of the outer edges of the factory support, run it under the front half of the support and weld them together too, like it shows on uscartool web site or I can cut some off the back and bottom on the edges and mount it tight against the back edge of the factory support and tack it together there too.
If you mean that the modine style (tanks on the side) is the radiator you are using then according to the guy at US Cartool it would work out fine. But if you are using the traditional radiator (tanks on the top and bottom) then you would need to extend the support under the existion core support. This is from them.
I am running top and bottom tanks, I emailed US Car tool about it and have gotten no response. Weird that once I ordered it was almost instant emails updating the shipment and it showed up quickly but no follow up support at all. I decided I did not want to create a new low point under the car by extending it 1 1/2-2" so I did some trimming of the factory support so I could mount it tight behind and attached to the factory support. Seemed if I were to try and cut the sides off the factory support and run completely underneath it then the support would be so low and right in the front and I want to try to keep the bottom of the K frame as my low point once I swap headers. I will post some pics soon of my install.
Yeah I emailed them too and got the same response. I called them and thats when I got a response but no follow up with the extention blocks shipment. If you are mounting yours behind the stock support I don't see how it would hurt. But if there are other components such as a bottom pulley or fan shroud involved I would test fit them before welding the support in permanently.
