That seems like a nice piece! Maybe even better than the ATR unit. Would be easy enough to make your own for much less. I kind of wish I still had 50's with a 7th for the reasons you state.
As for driving with them 83's with the Max-Effort gives me the best idle of anything I ever had in the car.
This and the emissions matters (which I forgot to mention earlier, it is like a mini-Cali up here) were of the utmost concern.CallMeMud:
The 7th will fuel you with smaller injectors and is tuneable. Another effective way of doing it. Will save you some cash to boot.