Hello,

I have a Mustang with a 347 putting out 475hp. I plan on road racing
this car, no drag racing ever. I am a driver, not a mechanic, so I
looking for a second opinion. The shop doing the work on the car wants
to put in a 3.73 gearing. I was thinking 3.27 would be better for
economy and top end performance. I was hoping someone out there could
help me with this.

Thanks!

David