This was a video made a few years ago with an interview from Marc at Boost Logic. He was super active on the Z31performance.com forums when I still had a Z, super helpful guy, helped me out a few times, really wonderful fabricator. If I remember correctly, he was one of the first guys doing “2JZ into whatever” swaps….definitely the first one to do it into a Z31. Great video, great explanation…..maybe something to consider in your project!