I don't think they are postons, I had s set and dobt remember that drivers side of as needed being split and I'm pretty sure they had the collector bolt flange facing down reducing clearance not up
Hooker headers? Looks like somebody cut the flange on one side possibly? https://www.summitracing.com/parts/hok-1203hkr/applications
I have a set the headers in question as well my flange doesnt look like an individual cut it and it doesnt have the hooker badge on tube for #1
The mystery deepens. My 1992 Torque Tech (Buick1) catalog only lists the MT's for the BBB. Hooker headers for the 350 and V-6.
I have a old Torque Tech catalog I'll have to check it out.Were KB's made like that?Or did someone possibly cut?