Amaru...our engine is using std rods (although heavily prepped) with arp bolts. Only three items in the engine are not Nissan...pistons, camshafts and sump baffles (four if you count the rod bolts). Around 450awkw and a 9250rpm rev limit and still no problems. The engine has its second birthday on Saturday and its copped a flogging from Stacey and I. Dont let it worry you, as GTR's fail more from oiling and piston issues than bent/snapped conrods.