This one is intended to pull a heavy trailer. I don't think an IRS is the right setup for that application and I know for certain the rear under the 'vette isn't up to the job.
I've considered building a truck with 'vette suspension but haven't pursued it very far. I had a line on a junk C4 for $500 recently and considered buying it for the suspenion. Instead I paid $25 for the seats because mine needed the adjusters. I've also watched trashed Jags on craigslist thinking that suspension stuff might be a good choice and unless you buy a kit, an easier swap into an old truck than Corvette stuff.
It may happen, but the concept on that one won't be pulling my trailer at speed, it will be leading the Hot Rod Power Tour in comfort.