...if you are running the buggy body, start by just making some lexan flaps (bent lexan) you can fasten to the body's nose area (w/ 2 sided tape).
Something w/ about a 1/2 inch base, and start with about a 1/4 inch kick, and go up from there as needed.
You'll find a little flap adds a LOT of front downforce at speed. (Positioning forward and back changes where that downforce hits too - and it another tool to play with)
your Car/Chassis angle will be a good tool to play with too..
R/C Racing since 1985 ~ Santa Maria, CA (Central Coast)
2001-2012 - South-West Tour R/C Oval Series - R.I.P.
...will the SWT be revived? Time will tell, but we ARE returning to the VELODROME in 2016