I find this way is the best for installing the [stable] vers of GPA16
Make sure you go to Peter Alfonso and download the zip for the ROM.
and put it on your SD card. (its his most recent post on there.)
then go to this link for the hidden feature in the rom, and download and put on the root of your SD card. Peter Alfonso Releases GPA16 (GB 2.3.4) For The DROID – And We Have The Hidden File - Droid Life: A Droid Community Blog
Boot into recovery and take these steps. assuming you are using Clockworkmod recovery.
1. Wipe data
2. wipe cache
3. wipe data
4. wipe cache
5. wipe data
6. wipe cache.
7. wipe dalvik cache
8. reboot recovery
9. install gpa16.
10. install hidden feature download from Droid life.
[optional] 11. install different kernel.
Once you have signed into google and everything is synced and installed, go to CPU settings, and make the Gov "Interactive" and max cpu 800. [assuming you are using the stock kernel]
Click set on boot, then reboot your phone.
Then youre done.