Hey Dennis the Areo is a good chassis. You have a bad boy 116 or 125 to put on it? Go to the chassis fourm and find out the numbers to set it up with. Also on dirt we run a 8" RF on 10" wheel, 8" RR on 10" wheel ,6.5 LR on 8.5" wheel,4.5- 5" LF on a 6.5" wheel. you can probably find a good deal on here for a full set already mounted. We also run 6" wheels on dirt. but I would stay with slicks and treat them to get bite. Any questions feel free to pm me. Mitch