if you get the motor in that rig you'll be able to race with truggies. as long as they aren't too serious, you'll keep up. Get the upper arms in the rear holes (changing the hollow balls as per the manual) and get P2 rockers with the P1 length rods. I did that to my stock 2.5 and it made a world of difference. it now skids round corners instead of flipping (stock tyres. ugh!)

good luck, and remember, it's not what you got, it's how you use it XD