3:73 or 4:10's w/ a T5
 

Will a 4:10 gear be too low for a T5 and 26" tall tires? At 60mph in fifth gear what RPM range am i looking at?

At 60 mph with 3.73 you will be a hair under 2000 revs. 4.10's will be about 200 rpm higher. If highway is an integral part of your driving 3.73's might be suited. If not, I would say 4.10 all the way.

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'91 LX Hatch, 17 ROH ZR6's, lowered, 3.73's, offroad H pipe, SN Cobra cat-back, ASP pullies, 14° timing, C&L 76mm MAF, 170A 3G, B&M Ripper on a T5
Best ET: 14.593 @ 94.62 2.292 60'
1991 LX Hatch 5.0L