That's pretty much all I'm looking for. i called a guy in Edmonton that supposed to be good left a message with him. I put a set of ported and polished heads with over sized valves on my viper with a roller rocker. That really woke it up 200hpand 897ft/torque. How do these engines do with that kind of set up. Will I have to get it retuned after again? The viper factory fuel injection took car of buisness when i did those mods.