Well, to make the fastest 4wd buggy (in a straight line) you buy the one with the widest chassis and fit a model turbine engine into it
And to not sound like im taking the mick i rekon a XX-4 with a novak 3.5R will be the fastest...... just maybe
__________________
Canon 40D (350D backup) - EF-S 18-55 - EF-S 17-85 - EF 100-300 - EF 50 - Canon 430 EX || Speedlite - Canon BG-E2N Grip
Adobe Photoshop CS4 Extended
AX-10 Crawler - Thats all I have left!!!