Seriously, just do it yourself, unless you wanna spend an arm and a leg.
A buddy of mine and his soon to be father in law toyota mechanic installed mine. Took em a couple of hours.
We had NO problems with anything. Take off crank screw, loosen the belt, pull off stock pulley without moving anything, install perrin, bolt it on, tighten belt, re-check crank pulley for tightness.....bam, you're done!