i dont know if its been answered before and i suck at searches, they never find what i'm lookin for. will 1 3/4 inch mac long tubes with 2.5 inch collectors bolt up to a bbk h pipe for long tubes just fine or will the two brands possibly not work because of flange styles or something? any help is greatly appreciated. i would think it should work, but maybe theres some reason they wont. let me know. i can get a whole mac system decent but i just found a bbk h dirt cheap, so i could get the headers alone then the h here. i dont know what to do let me know if the two work together. thanks.