What you got there is a Yokomo MR4TC-sd CGM with a couple of upgraded parts like the drive shaft,universals, and suspension mounts. These Yok's came in 3 versions. CGM, Black, and the SSG. The one you have is the tub version while the other 2 were graphite double deck versions. I have a couple of those myself and as far as tub chassis go, they are still great cars even now. The new drift versions are not quite as good as these cars and you can still get some hop ups for them. I would post a pic of mine hopped up but haven't figured out how to post the pics yet. LOL