NO DON'T cut anything Install the front header first then the cross tube and then the back header. i almost made that mistake. Just loosen the read header and start from the front. Trust me. I hope you have some coper rvt and some good band clamps you need 2, 3 in ones for the rear and 2, 2 3/4 ones for the front.
2.25 for the front. Not 2.75
01 gtp-big cam e85 dd 78dodge- guzzling fuel 05 cummins- rollin coal
SMGPFC Two Nipple General