where does your exhaust pipe exit the underside of the vehicle? should go ALL the way to the rear and have a small bit of extension beyond the bumper - straight or down or toward the sides, but ALL the way - if pipe[s] end just B4 or after the wheels, unless aimed well out the side, you will wind up drawing some emissions into the interior - also bad for the rear suspension and frame
I can say from experience the tri5's are really hard to seal up, firewall and front area, due to the design of the "fresh air" system, and it's always tough to eliminate ALL leakage of fumes from intake and exhaust - I've had a 55, 2 56's and 57 sedans - all smelled like old trucks
so I stick w/ old trucks, where ya don't notice the smell
Bill
