I am only familiar with the IRS end of things.
If you Google "corvette irs truck" you will find a couple of articles from Rod and Custom that are informative
(along with multiple other sources as well).
Here on Hotrodders check out Stovebolter's Journal. The modifications he has made are basically what would be required. I had to do the same procedure (but narrower) for my installation in my 27 coupe.
Basically it is a LOT of fabrication once you have the parts. Your welding background will come in handy...
Since the 'vette has been rolled make sure that you look at the dogbones holding the IRS in place. I found that they tend to have been bent on the rollover and need replacements.