hey guys and gals im trying to buy a THDP but i dont know what type of headers was put on my car and i dont wanmtto get the wrong down pipe heres a quit description of the first the header the block flang is 1/2'' thick the primerys on the passinger side are pretty long and there multipule pieces combined to make the header plus the cross over pipe flang on both headers is a 3 bolt flang no marking on the pipe that i can see and ive been all over them please any help would be great also if the THDP will hook up to any header other then stock let me know thanks in advance