Whats the plan for diff? I've got a 300zx z31 long nose r200 set up for mine with commodore / 31 brakes. Shame to see one so original going agricultural is it as nice as the pics look?
Also has he driven a 400 kw sub 1000kg car before? I'd stitch the frame n put some decent bracing in it to stop the bending.
Also if theirs e85 near you high comp + turbo + lots of timing = response