From what I can find they’ve used Banshee engines, which is AFAIK a progression of the rd350lc engine. From memory you can get those over 400 cc when fitted with Athena kits.
I've already got a 3.0l V6, EFI 2-stroke, it puts out 225HP. It's on the back of my boat though, and uses rather a lot of Fuel. Nasher.
Hmmmm that rear tyre is not going to look like that for very long, love 2 stroke engines, so easy to work on.
Robarano, is this a rhetorical question or are you looking to the forum massive for a more detailed response?