Just a thought, last year I ran a 15.4 from this thread.

That time was with these mods, mods in bold have since been added.

Transmission:
HMS built transmission
Spec Stage 1 Clutch
Fidanza Aluminum Flywheel
Quaife Limited Slip Differential
Updated Shift Tower
B&M short shifter

Intake Setup:
Rebuilt UIM & LIM
Aussie intake
K&N 3530 w/ heat shield
BAT MAF Adapter

Suspension:
Poly filled rear trans mount
Poly inserts on front trans mount
Rear Strut Brace
Koni sport kit
Subframe connectors


Exhuast:
Magnaflow mufflers
Magnaflow hi flow resonator
Gutted precats w/ MILs
MSDS Headers
Opt y pipe

Maintanence:
Ford Racing 9mm wires
Autolite Double platinums (.054)
Valvaline High mileage every 2,800 to 3,200
Royal Purple Synchromax

Yeah I know the mods arent much, but for what its worth it should shave off a little bit of time. And if you ran a 15.35, IIRC, and havent done any mods since... Then we are going to have a race.