After the nightmare of getting the one screw off the TPS I got the whole thing installed. The voltage is still set right as far as I know, but I'll probly have it double checked. As far as a cheap price the cheapest I found for the combo is 419 at
http://www.coolblueperformance.com/browseproducts/Accufab-4.6L-2v-75mm-Throttle-Body---Plenum.html
MPG... I think went down, but I'm betting its the winter gas and also me rompin on it more because I like the new throttle response and also the slight change in exhaust tone