This was in the first post of the thread. I had probably read through this whole thing 3 times before I noticed it - lots of info to digest.
*Some dimensions, features, and specifications of the header will be taken from the TBR.
The new header will incorporate the following specifications from the original TBR header design:
-header construction will be from 18 gauge 304 stainless steel tubing, [0.049"/1.24mm wall thickness]
-header will have 38mm od primary tubes [1.5" od]
-header will have 41.5mm od secondary tubes [1 5/8" od]
-header will have 51mm od collector tubing [2" od]
-header's rear primary tube junctions will be fastened by spring tension fittings
-header's left front and left rear primary tubes will merge
-header's right front and right rear primary tubes will merge
-header will have no crossover of front or rear primary tubes
-header's collector exit tube will have a 51mm od [See Note c below]
-header's tubing will be mandrel bent