Turbo4whl
Full Access Member
- Joined
- Oct 30, 2019
- Posts
- 4,016
- Reaction score
- 10,195
- Location
- Downingtown, PA
- First Name
- Wayne
- Truck Year
- 1974
- Truck Model
- Jimmy
- Engine Size
- 350
One advantage of Tri Y headers, the third Y puts both banks together for a single exhaust, for the cat and muffler required in some states. The cat (catalytic converter) needs to be in the stock location with heat shield. Read Pennsyltucky (ask me how I know) and probably California too.