Pretty soon I will have an adapter board ready that will allow folks to plug the meagsquirt EFI controller into a '90 to '91 stock GM TBI harness without hacking the harness. The gets rid of the entire harness fabrication issue . So a $500 plug and play TBI set up is not to far off assuming you use 2nd hand parts (fuel pump, wire harness, TBI (4.3 is fine for a 250) lines etc. ) The only new parts would be the megasquirt and the adapter board.
M.
