Okay, so I have an EP hatch with an A3 block and A2 Head running Kpro. I just finished the build and got the thing to run, basically my question is, when I get into tuning, and I know it depends on cams, and other mods, but basically, durability wise, how high can I rev with the stock A3 bottom? The head is good for 8200 RPM with no problems I know, but how safe is it to wind the bottom end out that high? I really don't want to lose any of my power, and of course, the major gains are up top with my swap.