hi guys ive just bought a weber 48 & manifold to fit my S3

[mc turbo]

hi guys ive just bought a weber 48 carb & manifold with the right jets & gaskets for my stock ported 12a with a custom 2x 40m pipes from header all the way back to a 3" fd back box what else do I need to complete my upgrade??? chees mick

[KiwiDave]

Two issues you will need to address are 1/ Assuming that you keep the factory OMP setup, you will need to plumb the tubes into the carb.

2/ You'll need to find a source on the manifold for the distributor vacuum advance. (2x vac hoses from the dizzy)