The 366 spring allows the pump to fuel all the way to 3200 RPM. Stock starts defueling at around 26-2800 RPM, so it's a big improvment. It also makes the throttle a lot touchier. Very good upgrade, and it oly costs about $18.well nelson they put a man on the moon and i have faith in ya whats the 366 spring i think it is
A good towing set up, that will be around 350rwhp would be...
Piston Lift Pump
Good Converter or Clutch
Mild Pump Tweaks