I recently bought #15160 BBK longtube headers and #1510 short h-pipe,double hump crossmember,h-pipe to trans bracket and all exhaust brackets. My problem is got the headers on and everything started putting on h-pipe and the headers collectors seem to be higher than the h-pipe collectors they don't evenly connect h-pipes gotta go up a good bit.The trans is a manual from 84GT5.0 If anyone has had this problem or knows away to fix it I would appreciate it. Thanks