I'd stay with the 3.73. It will give you a decent hole shot, without being too rough on cruising RPM or gas mileage. Be sure you have some way to limit the spring windup if you're going to do burnouts. Getting a tire hooked up after the spinning softens the rubber will make a pretzel out of a spring.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!