Here's the deal, I've been trying to pick away at my car in a quest to beat an 11.99 or better out of it with small gains here and there It's a LOW BUCK, mild 440 in a GTX that's race ready weight is around 3,750 and currently runs 12.30s with D.A around 4,500. This is also a street car so it's full exhaust, full interior, lights, etc. I'll list the engine details below. I've been trying to avoid the tunnel ram, open exhaust and anything else that would lead people to believe it should be much faster than it is. I guess I'd rather have a quick street car than a slow race car if that makes any sense. I also have a few parts laying around for other projects that I am contemplating throwing at it which I will also list below. I was just curious as to whether I am being unrealistic looking for an 11.99 or if I have one particular component that's holding me back that should be changed. Any thoughts or input on how to improve the performance without throwing large amounts of money away are greatly appreciated.

440,Standard bore, Standard Stroke
9.1 Compression
906 Heads with 2.14/1.81 Valves
Hooker 1 7/8 Headers, 3" Full exhaust, Flowmasters, No H or X Pipe
Holley Street Dominator / M1 S.P Intake (Tried both)
B/G 750 Silver Claw
M.P 296/557 Camshaft
J/W 3500 Stall converter
Mallory Unilite @ 39* Total
4.56 Gears, 30" Rear Tire

E.T is 1.69 60', 7.80's 1/8th, 12.30's @ 108+/- MPH

It seems as though it doesn't make the top end power. I shift at 5600/5800 and trap around 6,000. Also, the car ran quicker with 4.56 gears than it did with 4.30's FWIW. BTW, already confirmed fuel pressure is a solid 7 Lbs well into 3rd gear. Fuel Delivery does not seem to be an issue.

Spare parts I'm contemplating swapping in but hesitant about are:

M1 Tunnel Ram w/660's (Race car appearance though.)
Electric Water Pump
Hooker 5209's (2" Primarys) and possibly add H-Pipe
Dana 60 w/4:88 gears
"Your idea here..."

Thanks Guys!