depends on what you plan on doing with your s10 if it.s just a driver 308 342 r a good choice but if you beef it up a little maybe play on the weekends need to go with about 373 or 410 or even a 456 gears cost ya little more but it.s worth the time as for me my 88 is about to pickup a narrow 9 inch ford and a set of 456.s just for fun