I have a Hyper 7 Pro kit, and I can tell you that even though they are slightly outdated, they are still one the top 3 RTR biggies out there. You can race it, right out of the box. The Macstar .28 is a piece of shit engine. See if you can find one with a Hyper .21 engine in it, as this engine is the closest sport engine you will find to a racing Engine. I have a Race roller for sale, but you need engine, pipe and electronics. But it is hopped up to the max, and worth about $1000 (US) PM me if you have any interest. It's in perfect working condition, and it rocks, I'm including enough spare parts to build almost 2 buggies