Help me shave off 3 tenths in the 1/4

So I'm running 12.1 @ 110mph, as we all know that's so close to being in the 11s that I gotta do it. Race season is done around here for the season but I would like to make some changes throughout the winter. Here is my setup
74 barracuda,3800lbs, 416, ported eddies, hydraulic roller 242/242-550 lift, ported rpm intake, fast ez efi, msd, tti headers, 2.5" exhaust with flowmaster 40's, 518 od with 2800 stall, 8 3/4 with 3.91s.
Couple things I think will help
-I'm currently running heavy duty clutch fan, might try the standard clutch fan, I've already spent a fortune on electrics but have not had any luck with them.
-I'm running heavy 17" wheels, might try to find a set of racing wheels with skinnies on the front, I can just switch them over on race day.
-Single plane intake, I've heard the fuel injection likes single plane more but I need to confirm that.
-Exhaust..... I'm really nervous about this one because I don't have drone right now, I definitely don't want to put on something that creates a bunch of drone.

Am I missing something that won't break the bank ?