if you are just concerned with torque or a fun seat of the pants feel ..is suggest as already stated dual exhaust and rear gears 3.91s for example. A four speed doesn't hurt either, but that combination with 3.91s is revving at 3000 RMP at 60-65 MPH from my experience, yeah it will do 100 but its revving by then...if you are more into light to light or 1/8 mile and not into top speed I'd get some rear gears... I wont get too into my personal thought s on 318...unless ya really wanna hear(read) it I don't dislike them really but I'd swap it out for a 340-360 and be done ,and Id consider it money well spent before dumping the $$$ into a LA 318.
