You will need access to one of these. ZZ Performance

And this is the pulley system although judging by your cheapest comment I would go no smaller than a 3.5 or better yet a 3.6 ZZ Performance

And of course you'll need a 660 one of these ZZ Performance

And you really shouldn't do any of these things without one of these.
AeroForce Interceptor Gen II Scan Gauge - GM OBD-II Vehicles [AF1-OBDII] - $259.00$239.00 : MarylandSpeed.com- Your First Stop on the Way to Performance!

or http://www.hptuners.com/order.php