not worth it for minimal gains on the stock engine.
unless he gonna tear the engine down and rebuild it with stronger internals(ie stonger rods, forged pistons, 4age head, etc etc) coz the standard 7afe's don't like like high revs :hammer:
edit: i think there only 2 or 3 companys the make the stronger rods for the 7afes, and 4age pistons can be used as it was only the stroke and not the bore that was increased with the 7afes