AAAHHH. Tubbing a goat. Now that will be sweet. Its a tedious and time consuming job to tub something if you havent done it before. You need to take the rear end out, gas tank, rear seat. You will have to cut out the entire rear section up to just behind the front seats. The car must be perfectly level. You will have to figure out the tires and rims with the back spacing you want to calculate the amount to have the rear cut down to. Id check with Chassis works or someone to see if they offer a custom install kit with frame rails and crossmember for your car. Theres a lot of welding and measuring to it. If my buddy hadent helped me, Id been lost. You might check some GTO web sites to see if anyone else has tubbed one. They could give you help with tire size and rear end width. That would give you a big jump on things. HG
I was built with the body of a God! To bad it was buddah.
Hemmies rat journal below.