[Peter M]

Originally Posted by sp_cs

I see PMs have a B&B option with I believe is a bespoke primary length - anyone confirm how this differs to standard B&Bs?

1 5/8" Exhaust Manifold Headers Heat Exchanger Set By Patrick Motorsports Porsche & Mid Engine Performance Specialists

Shirish,

The Patrick Motorsport ones:

1 5/8" Exhaust Manifold Headers Heat Exchanger Set By Patrick Motorsports Porsche & Mid Engine Performance Specialists

are the same as the ones I linked above on the BBE website. However buying directly off BBE will save you around $800 when compared to Patricks. They both have the same part number.

As for the different flange thicknesses, there is only 1/8" difference between the thin flanged BBE's and the thick flanged ones. 3/8" vs 1/2"