I have that same exact build up! I had my F54 block bord over .20thou. I calculated my comression ratio at about 9.92:1 so I used an HKS head gasket its a 2mm head gasket that reduces my CR to 9.2:1 so I can use 91 oct. The F54 block is stronger but it wont make a difference on a NA engine ... it is a good Idea for turbo or 3.1 stroker engines but I don't think it would make any kind of difference on a NA engine. most important ballance your rotating mass. crank, rods, pistons, rings, flywheel, clutch plate, belt pully. It cost a little bit of money but it makes for a smooth high reving engine ... mine reves up to 7K easy, and Im running SU's. I still haven't dynoed the engine so I have no idea what the RWHP is but I did smoke a 2002 camero SS ... I think I scarred him when I "cherped" my tires in second gear:twisted:. Good luck with your build up and let me know if you have any questions.
Rock on Z People