When you do it,make a bolt template from the donor frame,it will make it a lot easier to put back together.I used a 78 3/4 under mine.I have some pictures if you want them.
_____________
Floyd
If we choose being kind over being right,we will
be right every time.
Knowledge is a poor substitute for experience.
Remember what is precious to another, may not be to you, but it
is precious nonetheless.
1948 Chevy 2-Ton 
