94 4.0 ranger power

[PKH]

What are some of the good power mods that realy payoff 94 ranger 3.73 rears 5 speed,K+N air filter, after maket rebuilt rocker shafts,32inch At,s standard plugs, tried E3,s didn,t run well don,t know why 2001explorer loved them other than that stock. Pat K

 

[daniel3507]

port and polish is the big one