[Littlestan]

Here's some more info I dug up about the headers;

"OBX Twin Turbo Manifold for 86-92 Toyota Supra's (Part # :TH10267). Fits all 86-92 Twin Turbo Toyota Supra's Twin Turbo only.

This item does not come with a wastegate
The manifold is made out of SUS 304 Hi-Grade Stainless to help disperse heat
The manifold has double welds for protection
The manifold has welded brackets to prevent cracking
This manifold uses a 40mm wastegate
This manifold is for twin turbo applications only"

-=Littlestan=-