Ok working on a 88K5 Blazer with a semi-built 350TBI. Its equiped with a 19" tall radiator. She has ac/and a tranny cooler. What I am wondering is can we use a big block 4 core? If so what model, year, and engine size? I have a kick a$$ contact at this radiator place and we are trying to make it work out for the folks on this site. Dont steal my truck..I dont need anymore worthless junk over my fireplace.