[Rwillia4]

I have the TWM system and it works great, it is very streetable and has the grunt when needed. It idles smoothly when cold and warm which is adjusted thru the linkage. There is NO Idle Air Control motor as suggested nor does it need it. I picked it because of many others using it (including Roush) and I felt the support would be there for a long time. I also liek the fuel rail on the inside of the stacks, it has a cleaner look IMHO. I use the FAST system to control it. Look thru my pictures to see my the dyno sheet.
Some of the other systems I'm sure work well also (I like the look of the efi webers but they can only handle upto 500 hp). Some are not as good as others, ther is one suggested here that has a LARGE backfire problem (not exhaust leak related, mor eof the injectors spraying on decel). Bottem line do your homework and see the setup in a vehicle and talk to the guy before you dump the wad of money.