i was wondering how durable the stock valvetrain is? ive got a forged bottom end with SHM cams. i shift @6500 because thats where everyone says to shift for max hp and boost since i have a S-trim. rev limiters set @7000. is this ok for the stock valvetrain? i really dont have the $ to upgrade it, im trying to save for a TKO (yeah the motors bulletproofed but the rest of the drivetrains stock!). im just trying to prioritize a little here.