This has been dead a while so here is some new info. I'm a week out from my biggest swap meet of the year, so I said heck with it and put together three disc kits that I'm taking with me. This isn't a classified since I'm not selling this via the internet. Feel free to critique however, as if you were on site and inspecting the offer. Here are the specs;
Stock, original equipment, 11.75 rotor set up. Includes disc spindles, rotors, all bearings and seals, caliper brackets, calipers, pads, and related hardware. Weighs in at a healthy 90 pounds, 45 per wheel and I'm selling it at $400.
Wilwood kit with 11.75 rotors, disc spindles, all bearings and seals, adapter brackets, pads, and hardware. Weighs in at 70 pounds, 35 per wheel, and will list at $700.
Viper kit with 11.75 rotors, drum spindles, all bearings and seals, adapter brackets, pads, and hardware. Weighs in at 76 pounds, 38 per wheel, lists for $800.
Obviously the spindles, stock brackets, and Viper calipers are used. Rotors, bearings, seals, dust caps, adapter brackets, and Wilwood calipers are new. Stock calipers are rebuilt. I plan on selling kits less brake lines and master cylinder since these can vary between applications quite a bit and I can't afford to take enough inventory with me of those two parts to cover all possible car combos.
Some interesting things regarding weights using my wholly unscientific, probably worn out, bathroom scale checks. Wilwood calipers are 3#, Vipers are 5#, stockers are 10#. The caliper adapters, Wilwood 1.5#, Viper 3#, stockers 3#. My unit isn't accurate enough to really differentiate spindle weights so they all appear to be 5#, but I'm pretty sure drum spindles are lighter than disc spindles and I know the taller FJM spindles are lighter than the older ABE spindles.
I'm somewhat suprised the Wilwoods aren't lighter, because they sure look like feather weights in hand. Maybe it is because the Viper calipers are freaking HUGE by comparison. Looking at them all side by side it is quite a sight.
FYI for everyone who voted for vette calipers or mustang units; Cost for a kit for these would probably be midrange in price between stock and Wilwoods. You can get a pair of calipers for around $150, but no one is making the brackets yet. Kore3 brakes in Australia is working on a kit through. Odds are the bracket kit would be in the $150-200 range, comparable to Wilwood or Viper kits, which means a whole 11.75 conversion kit using vette calipers would be about $150 less than Wilwoods, and be slightly heavier than Vipers.
If I was putting these on my own car, I'd have to side with late model mopar stuff. The Viper units are just impressive and the staggered piston size will create nice, even clamping force while the sealed pistons will ensure long life. The black calipers create a nice, understated look to the casual onlooker, but the more attentive viewer is treated to a large white VIPER logo across the side to warn them about the potential stopping capability sitting by their feet. However, some future plans for my car may eliminate the possibility of using these for a few more years. Maybe by then I'll have been able to finish up my drop spindles too.
Next up I'll have to work on creating some venting ducts that can bolt to the stock spindles. I still believe a well vented 11.75 with 15" wheels will brake as long and as hard as a 13" rotor with 17" wheels, albeit with a little more leg force involved.