Where to find good exhaust pipes

[frederic]

Just tried to put my MAC"S (prob should not have bought but always expecting proper fit as advertised) exhaust pipe from header to muffler on and the flange (for one thing) is too big and close not allowing the nuts to easily go on the studs. Any one know where to get exhaust stuff that actually goes on correctly and fits correctly?

thank you

Frederic

[email protected]