[SCOTI]

The sandersons had the biggest tube I could find in a 3/4 length @ 1 7/8"& they have fairly thick 3/8 flanges. Since mine have only been ran less than a dozen times indoors I can't really say how well they would hold up in a daily realworld environment. The best thing about the HPC or JetHot coating process is that you can coat the inside & outside of the headers/exhaust to reduce temps underhood. Sanderson also makes a cast bb/sb manifold but I would'nt think it would flow as good as headers although it's possible they might flow better than ram-horns. I've talkes w/guys that have done stainless systems (I work for a dairy plant so I've got limited access to 3" stainless,u-bends,bolts,etc) & they all said the exhaust would likely 'grow' an additinal 1/2" to 1" in system length. I decided to go w/mild steel & get it coated w/the hardest part being the sections of the system were limited to a certain overall length so it would fit inside the tumbler for polishing & that added more flanges/gaskets. Hope this helps.