73 kframe on 72 abody

Hello: I am replacing the damaged k-frame on my 72 Demon. I replaced the original more than 10 years ago and all was well. I like the horn type mounts. So I manged to bend the k-frame on a high curb at speed, and I bent it badly. (more that that one later) Any way the replacement I have is a little tight and doesn't want to bolt up correctly. Hmmm. I am thinking of opening up the rear bolt holes about a 1/16 of an inch on one side that should work. but I am unsure about this approach. Will this mess with the alignment or the car tracking straight? I called around to see if any one could put this car on a frame machine and check it out. But no dice. I am told I need an old school bench frame machine to do this. This is due to the fact I have no front suspension right now and it is rolling on trailer dollies. Most body shops don't want to touch it. To use a normal frame machine I need a front suspension to roll it on the rack. So I have no choice but to get out the Die grinder. I haven't gone that far yet. So just wondering if any one has any thoughts. please post. Thanks caxey1 AKA Bo Duke.