318 2 brl to 340 4 brl conversion Whats needed?

SRKlegin said
Me too, only difference is mine is an E-Body.

SRKlegin said
1972 Plymouth Barracuda.

1st - Welcome to the site!
2nd - the thread you posted in is 18 years old!
3rd - the guy you quoted hasn't been here to this site since 2023. Probably won't get a response