exhust (Page 1/1) Mr.sandman NOV 04, 06:59 PM hello every one im back at it !! but i have a question .... 3.4 swap what size bolt do i need to attache exhust manifolds to down pipe legnth with thread pitchh all that jazz . and do i need gaskets or springs ? also things do not line up perfectly is this normal ? shpuld i just use a persuader and make it fit off about .25 of an inch