Im trying to put on a Pace Setter ex manifold and it is hitting down by the area where the bell housing and the engine come together .We got it at Summit and they sent another one and its the same way .Any one have this problem before ?? Theres plenty of room between the frame and the collector but they tucked it right up tight against the bell housing .Im wondering if theres a difference in engine heads on the carb model head and the injection one and maybe they have there numbers messed up.Seems like a spacer of about 1/2 inch would move it out enoughto fit . BTW standard transmission 4x4