Hello there I'm new here so hopefully somebody can help me. I've had this HODR Expert Series buggy for ages. However, i've never put an engine in it. It's fully built and the whole nine but that's it. I figured it was time to put a powerplant so I got an HPI NITRO STAR 21 BB engine. Well, sadly it doesn't quite fit. At this point i'm either gonna sell the whole thing and just stick with something more modern, sell the engine and get a different engine that will fit or dremel and cut till it works. IF anyone has had and experience with this 1/8 scale buggy and help will be greatly appreciated. I'll have pictures of the whole thing on my webpage eventually. Thanks for any replies.

Can you take some pictures to help us see what the problem might be?

Other than that, I cant help you much. Id go with something newer, but thats just me.