The 3.73 is one of the most desirable street rear gears around. As far as the tranny goes, loose it. Find a T5 with a 2.95 first gear. You will be very happy. Do it right the first time. The 235 has plenty of torque to deal in the 2.95 range but does not have the revs to handle any lower a gear. The 4.03 gear was made for an engine that never came near the 235 capabilities.

Warren