What you're looking at is rallycross unless you plan on caging the VX. There's actually an active rallycross program in your area through the local SCCA region. When I get home I'll post a link to the rallycross site near you.

Heraclid and I have been rallycrossing both our VX's this year and the only issue experienced by either of us has been a dismounted tire on my part. Now that was with the stock 18" Duelers which I don't feel are well suited to the rigors of competition. What I've done is acquired a set of 15" alloys from eBay and have Yokohama Geolandar MT+ tires strictly for rallycross. Heraclid has been running BFG MudTerrains on his OEM 16" wheels and hasn't had any tire issues and did much better than I in the last event's wet course conditions.

So go check out a local rallycross and see what you think, then decide based on what you come away with. It is a very addictive sport, and could lead to greater (and more expensive!) aspirations. I've had a shell to build a Ford Sierra RS rally car for some time, but my recent involvement in promoting rally in Florida has really put a fire under me to get the project underway. I actually came very close to building my IronMan to ClubRally specs, but ultimately decided to stick with the Ford and use the IronMan as the tow vehicle. That'll be a sharp photo!