Input needed

Looking to collect parts for twins. It's going to be a slow going project. I'm looking for advice on what to get far as turbo/ injectors. Would like to keep my s363 and build up from there. Current mods are



63/68/.91 t4 90* outlet hx40 flange

44mm external gate

enterprise engine pump 4k benched 650cc

7x.011 sac

Airdog II 200

60lb valve springs

Shcs head bolts



Already relocated the engine heat exchanger to under front bumper.



What size injector?

5x.016

5x.018

5x.020



Turbo? 63/8x?

63/ht4c



Little lost never done twins or been around them seen many pictures online.