I'll post my costs so far.
LET pulley/phenolics/SL55 boxes/ Thermostat/Radiator fan tuning/Tune= $2050
Kooks exhaust with tips 764.00
Dyno time and custom tune$220
Custom Plenums $100
Total expense on car $3134
This was for 377/378 on a Dynojet.
Two future mods will be TVT injectors and ACPT driveshaft then retune.