Simplex, that's good info, thanks!

Since you seem involved in the manufacturing process/chain i would take it that you might have some contacts regarding the overall design of the Headers?

I would with all respect for the Fenton brand suggest that:

1. rear header flange should point 90 degrees downward (instead of currently 76 degrees or something) (front header points 90 degrees) (this was the most annoying thing when fabricating a dual exhaust setup, the angles gets messed up)

2. Both front and rear flanges could be made slightly larger to accomodate a bolt and nut setup for fastener (threaded holes on soft cast material will take a beating)
(By flanges i mean the end of the header that connects to the exhaust pipe)

=)