TPI on a SBC 400?!?!?!

[ChevyJr]

I have read many of the threads and different forums on this subject so I don't mean to be redundant when asking can anyone offer any guidance and/or opinions when swap from a carb setup to a TPI setup on a sbc 400. I enjoy barkin' my tires everyone once in a while with the 700r4 paired with my sbc 400, but think a TPI setup might offer slightly better mpg to my daily driver.

Currently I have a Holley Street Avenger 770cfm which I only put on there because I live in Colorado. Figured I'd be able to create a better air/fuel ratio by sizing down the jets with a bigger carb. Works well, for me at least. And although my carb hasn't given too much trouble, I know it can be tuned even better than I "tuned" it. TPI's electronic tuning sounds like something I'd be really interested in and the reliability as well considering my '65 is my everyday driver. (Modern cars make me sick ha)

I've read a lot of sbc 350 conversion just not too many for sbc 400's.

(Oh and running a 3.5" air filter now... that disgusting one is no longer on there)