Tim,
On the ls/vtec motors I have built I have used OEM brand new pistons & had 1mm removed from each side of the inside of the piston to clear the ls rod.
I also had arp rod bolts installed according to arp's specs on the ls rods.
__________________
Authorized Dealer & Tuner for: Hondata, eCtune, Neptune, AEM, Crome, Precision Turbo, Omni Power, Walbro, Innovate & more. Dyno Tuning Services, Ecu Chipping, Chipped Ecus, Conversion Harnesses, Widebands, Fuel Injectors, Fuel Pumps, Map Sensors & more.
For more information visit http://www.Phearable.net or call 1-888-236-9831