I got some really nice ones from A Zone, free tool loan program. just put down a deposit on yer CC, take home the tool, return it and get the depoist taken off card.
then again, I borrowed a set from them a year or so ago and like the tool so much I kept em for the $50 deposit.
1/2in Paranoid Rear Spacers, to get rid of the butt sag.what are you putting for spacers