Long Pipes
Chad;
I have a set of long pipes for my Boss, and the aft mount (97) is exactly the same as the short pipes (if you HAPPEN to have the headers on the correct side!).
My pipes do not require any gasket @ the collector, they are just "metal to metal". The forward pipe flange is the female fitting, and the header flange is the male. Fairly good gas seal, if you carefully position them as you tighten the fastners.
Lamont has a stub of pipe INSIDE the header / pipe connection to further insure a better gas seal. He would have to elaborate to better explain.
Ride Safe!
HAWK88
Jack Phillips