msghuff

I know Im going to have to cut the pipes in front of the cats but was wondering what headers come with flanges to weld to your stock system? I dont want to weld the headers to the rest of the system. Ive got a 99 6m and want to use my factory system (cats) My accountant will not approve funds for a complete system :cry TPIS, Kooks, FLP????

Guest

Shorty's only. I believe everything thing else will require welding.

msghuff

I know I have to weld flanges to my original system but was wondering if / which companys came with flanges to weld to your system?

Guest

TTS by Steve Cole. Not sure about anyone else. 1.5/8" header. Requires welding a flange in front of your cat.

You would probably be better off just buying a complete system back to your axle flange. Something like FLP or LGM. No welding, bolt on!

Bob Chapman

Check out Stainless works LTHs. They make a very high quality product that installs with a minimum of welding. I like mine a lot and they give really substantial rwhp increases.

SFVetteman

Some longtubes (like TPIS) slip on to your stock intermediate pipe after it is trimmed to the proper length which allows you to retain your stock cats.

Guest

Kooks makes an available flange adapter. The other thing I've heard about
L-Ts though (vs shorties) is that if you have to replace the clutch, the headers have to come off.

Fastguy

FLP's bolt right up to the stock system.