The Havoc and Manic are about the most challenging and extreme rc's available. It really doesn't get much more extreme than a big block .28 powered 2wd and .36 twin.

Normally I'd say get a 1/8 buggy or truggy with a modded .28 if you want to get nutty with nitro. But the Havoc and Manic are basically truggies already. I don't know how much nuttier you can get! Lol