Here's the address of the West Olive track.
WOOR - 10152 144th Ave West Olive, MI 49460-9610 (Outdoor Offroad)
And here's a link to all the info on the associated GT you'll ever need:
I run electric and gas, mostly a GT like yours and 1/8 buggy. Probably be selling the buggy after the west olive race and just race the gt and T4 until the carpet season comes up. If you have any questions about the gt shoot me an email or PM here or at the gt forums.
If you come out to the west olive track look for me. Will be pitting next to a black extended cab 4x4 s10 and red fullsize ford extended 4x4.