I have an rb25 for sale this has had no expense spared. it has treated crank,par rods,arp stud kit in the bottom end, wicso pistons 40 tho over, acl race bearings,N1 oil pump, head has over size valves, valve springs, titanium collets ratainers, pro tomie cams timing gears ,gates timing belt arp stud kit in top end as well big port job on head proffesionall built to run around 800 flywheel hp this motor has never run all brand new 0430153368 if you wish to know more. price $11000.00 have recipts