|Havent heard the best things about the ash FPCU. Not sure if it was just the ground wire issue or if there was more to it. I've also read that the external Aeromotive pumps are loud as Fek.
You could probably just run the 485 pump wide open and upgrade to a decent FPR. Might want to upgrade your return line though. I believe that the stock hardline is 5/16", smaller than AN -6.
If you're looking for a FPR i have a used Nismo (adjustable) and an aeromotive compact 13105 with about 3,000 miles use.