i have an old 1983 302 flat tappet engine that came out of a mustang vert. i keep on thinking i want to build a stroker engine, and i keep on thinking should i save up for a crate engine or should i try to take that rusty hunk and start from a scratch engine block? is it possible to turn that block into a roller engine or do i have to stay with the flat tappet design? also the engine wasnt properly kept and i would definately have to bring it to a machine shop. i am almost thinking that i would be spending just as much cash to build my own stroker as i would if i were to spend 4,500-5,000 on a 347 crate engine.