go with 1.25" spacers from Spidertrax. www.spidertrax.com
nothing wrong with them if you maintain them, check them frequently and watch for cracks. torque them properly, use loctite and follow the directions.
if you go 1" or smaller, you need to trim the studs in front, if you go 1.5" or larger you need to install new studs in the rear. soo....1.25" is the sweet spot.
if you're getting new wheels, then just get wheels with 3.75-4.25" of backspacing.