Help with TPI Swap!! What\'s involved? I bought a TPI unit from a friend of mine for $150. I want to replace my Throttle Body with the Tune Port System. What will I need to do this? It has the intake and computer with it. Will my heads work or should I get new ones for more power? I would like to install a cam at the same time. Any suggestions on the type? <font color="red"> </font color> help would be appreciated.