What to do...
/6. Ive seen turbo kits for 700 plus fabrication and misc another 5-700. Although you can probably build a V8 for less but then you are looking at a tranny,converter, motor mounts or k frame, driveshaft mods,another radiator, a beefier rearend, better brakes the list goes on................although I'm almost done converting my slant 6 Dart to a 360 Magnum if I was starting over at this point I would go slant 6 basically warmed over with a turbo kit should but you in the 13's