The New Suzuki Quadracer HQ Welcomes All LT500 Quadzilla, LT250, LTR450, LTZ400, LTZ250, LT80 owners to the Suzuki Quadracer HQ forums
http://www.ebay.com/itm/Trinity-Stage-IV-Big-Bore-550cc-Engine-LT-500R-LT500-500-Quadzilla-LT500R-/131007686008?pt=Motors_ATV_Parts_Accessories&hash=item1e80aaa578&vxp=mtrKinda pricey. Trinity has been around forever. Could it go up against an HPR or Q or? and be competitive?
http://www.suzukiquadracerhq.com/index.php?action=store