97 SVT Cobra

So I have just recently dropped my car off at "Mustang Muscle in High Ridge, Missouri". they are adding a few things and finally dialing everything in on dyno. my big question...what more can i do N/A to get gains. When I get my car back and have Final HP/TQ #'s i will post them.
Thanks in advance for anyone giving me advice, much appreciated.
1997 mustang SVT Cobra
"Romeo" engine 4.6l 4v

LIST OF EVERYTHING IVE DONE.
4.10 Gears
K&N Cold Air Intake
Steeda Underdrive Pulleys
Aluminum Drive shaft
Mcleod Aluminum flywheel
Mcleod Street Extreme Clutch
EV6-Uscar 24LB Injectors
BBK long tube headers
Power master 200AMP alternator
MSD Coil Packs
Ford Racing Wires
...
......
little things I've replaced
Oil pan
oil pan gasket
Header exhaust gaskets
SR Lowering springs
Koni shock & Strut kit
Sway bar end links
Radiator
ALL CLUTCH ACCESORIES
water pump
Short Throw Shifter
spark plugs
Axel bearings and seals
idle air control
Fuel Filter
MAF sensor
valve cover gasket, spark plug gasket
changed ALL fluids Except for Power Steering
"Vibrant Ultra Quiet Resonators
"X-Pipe
"SLP II's