Frame rail issue

[06Daytona]

When I bought my car a few years ago the gap at the top was about 5/8ths and the bottom was about 1/8th. When I took the car to my sheet metal guy I took a copy of  the front frame dimensions that I got here and he measured and remeasured when putting on my new front inner fender. There was a gap at the inner fender to firewall of about 1/2 inch at the top and 1/8th at the bottom that my body guy and I both thought was just a repop issue. When it came time to put the fender on, the gap was still off but better than it was when I got the car, and I could see a visible downward slope from the door to the front of the car in the body line. It had been bondo'ed away with the old fenders
If we were to drill out the spot welds at the firewall/inner fender seam with the fender on would it be possible to get the line right without much effort? Kind of a stand on the rail and weld while someone watches the gap from the outside.

The left frame rail was replaced long before I got the car so it's not my fault it's like it is.

[torredcuda]

After you cut the spot welds maybe put a floor jack under the frame rail right at the front and the weight of the car might bow it down enough.

[06Daytona]

That's what I was thinking but I didn't want to cause more problems. We planned on taking it to a frame straightener and then my brain started working on the idea.

[jimynick]

I'm confused. You mention that "the gap at the top is 5/8" and the bottom was 1/8". Of what? The fender/door gap? If that's what you're talking about, cutting the apron loose and standing on the end of the rail will only make it worse. Why would the bodyman install the apron cock-eyed like that- repop or not? You mention that someone replaced the rail before you got the car and I'd bet that there is where your misery is starting. If there's a decent frame facility you can find, get them to set up a datum line on your car and they can use that to reference the various control points of it. It'll show if the rail is too low at the front which is what it sounds like. Just my 

[06Daytona]

The door/fender gap was out. I meant to say stand at the frame rail/firewall junction and add pressure to close the gap. Now that TS Chantal passed I can get out to see him and get the frame rail dealt with.

[IMNCARN82]

You may need the slot the front fender mounting holes it the upper rad. Brace forward/back a little. The factory holes only allow for side to side movement there. That way you might get a little more wiggle room. Descrepancies show up at the headlight bucket outter flanges.       R/T

[jimynick]

No offense, but when you try to cheat a fit problem away, it's like throwing a stone in a pool, the rings just spread out everywhere. Then, the hood gap is off and the length is wrong and then the bumper gaps are off... and so on. Fix it right and you'll never curse it again; 1/2 a$$ it and you'll learn to hate it. But that's just my 

[IMNCARN82]

just trying to help.  guess i'll keep my mouth shut around here...