1. If you haven't done so already, be sure to do a thorough job of cleaning up the casting flash on those new heads.
2. In the same vein, note that the "pockets" of the pushrod-tube bores in the heads on the rocker-arm side have a sharp "step" where the machining operations intersected. That sharp edge can catch and cut your outer pushrod tube o-rings as you are inserting them (ask me how I know). Filing or grinding down the sharp edge to a gentle radius helps to avoid this cutting, and it's better to do that before assembling the head to the engine.
3. What's with the holes in those intake manifolds? Are they for fuel injectors?
4. Umm, I thought you were ditching the straight-cut cam gear setup in favour of a stock helical-cut gear?
5. What the bleep happened to your spare tire well?