Hi Eric, thanks for replying. I checked out the site you linked to also, looks good! Do they race at Gateway Motorsports Park in St Louis?
I’m glad you said there are lots of options, because I had done some initial browsing and not found much (Craigslist, Ebay, I didn’t know where else to look). I found some on the forum here so thanks for that tip, I’m hoping to find something relatively local that I can view before buying. Regarding engine. I think I’m going to go Honda CR125 (Stock Honda?). I ran a TM before and liked it, but I gather the Honda is much better supported here.