It depends on intend usage,3.73 is a good all around perf/city gear,or out on the hyway,with perf still in thought,a 3.40 gear would be my choice(assuming a 28" tall tire). I run 4.10s in the longhorn,but shes just a fair weather toy(1500-2000 mi per yr)......not too bad in town,but needs an overdrive for hyway driving. I would figure the tire size you will be running,& gear arcoording to that. There is a calculator in "support" @ .....
http://www.richmondgear.com/