Dyno'ed My 360..it's a pig..what next?

Just another option for the OP to consider, why not take it back to the shop with the Dyno and pay them to tune it on the dyno before you go out and buy a bunch of new parts? It seems the OP was happy until he saw numbers that didn't meet expectations.
If you're happy with your car just drive it and enjoy it and don't get caught up in the numbers game.