Ok, i decided not to go with NOS yet... wanted to build the motor up more.. I have $500 to play with. What should i do? I already have custom cai, bbk shorties, full 3" exhaust with magnaflow mufflers. Want your opionions...
Trust me. I have 373 on my car. I have an auto as well. I am not that happy with the 373. I really wish I would have gone with 410.
410 in a auto are like 373 on a manual. You will be happy with the 410s. And if you were worried about mpg then you shouldn't have a mustang V8 as your DD.
In my first 2 fill-ups since putting 4.10s in my 5 speed, I actually picked up mileage. All depends where u drive. You will pick up a bunch in the city, and lose a tad on the highway.
If you have a full exhaust package, how about finishing up your intake to completement it? Maybe a MAF ( I like C&L ), Inlet Pipe, and Throttle Body... I also like the Pully Upgrade as well. My $.02 -- 4.10's if you go with gears on an Auto. Good Luck