Ferd used some 160# injectors on mid-late 90's crown vics with propane injection.

These injectors are usable with gas Ok and you can find them on Ebay.

Each injector will support 300HP... so 2 of them would be LOTS!

Suggest spraying against the inlet air flow to give the fuel a chance to vaporize...

51 GMC 4.2 turbo
Can't solved today's problems using the same technology/thinking that created them