I own a motor mod company, called Sinister Mods. I have built two of these little mills, and I have to say they are pretty strong little motors!

My team driver who races Dirt Oval, really likes this motor in a 1/10th Sprint car. So for you guys who are wondering if they are worth it... Modded, they are very much worth it, they are very strong, excellent running little motors.

Now, if you want my personal opinion, I would stay with Novarossi, because you know what you are getting from a Nova... They are the top of the barrel as far as motors are concerned. I have yet to have a bad Novarossi! Just something to think about.

I did notice one thing about the GRP's, they are very similar to the Old GRP Ninja line, but do have suttle differences that make them just a bit different.

Just my two cents, hope it helps....

Oh, and by the way GRP's interlocking pipe design is kick ass!!!! No springs or anything! way cool engineering....