not exactly sure on the rear end came from a 88 turbo, but i know its not the 4.30. has a r154 tranny, no weight redux at all.
it was a mustang dyno, i made those numbers on, but that was once i added my safc2, the run was done with 550/lex, 3" tbe, wga shimmed to 12psi, stock 7mgte.
2.1...