Ok here's what I'm gonna do........ I'm gonna get the Carpet Knife standard version (because I don't want to spend all the extra $$$ ), an "old skool" front end (I found a complete old style front end kit from Hobby Ect. for 20 bucks). I'm guessing that it will just bolt on from what Stormperson said. I'll find out what tires are right for my track and order them from some place that's cheeper . Here's another question I've come up with, what servo do you guys use? The only servo company's I will use is either JR or Airtronics. I had a Hitec servo and it died after not very long for no reason . And all the Airtronics or JR servos that I've had are all still goin strong . I've had a JR servo in my Rustler for 3 years, now it's in my xxx-t, and I've never had any problems with it except I stripped the main gear once because it's plastic. I want to get a high speed servo with metal gears. I probably sound pretty picky right now, but when it comes to servos I like to have good ones. I also don't want to spend more than around 60 bucks. But all I really want to know is what servos you guys like and their specs (speed, torque, metal gears, price, ect.). Thanks!