Was going to do an axle flip, shopping for some weld on perches ran across these. If everything would hold fine would come in pretty handy because you could adjust you pinion angle without shims if you changed your setup. Considering you have the u-bolts cranked down and holding things together anyone see any reason not to give them a try. $50 compared to $150 seems pretty good to me. I guess you could scribe the axle housing and if you noticed anything slipping you could always just weld them up.
http://www.speedwaymotors.com/LEAF-S...P-ON,6907.html