If you want it to go fast put in the Double Nickle 1955cc 90.5by76.8 Type 1 case with a waterboxer crank and dual Zeinth 32 NDIX use 36hp doghouse shroud and it would look fairly stock. Check out this site
www.veemotors.co.uk/ I build the same engines but I only use 90.5 pistons as it much hotter here in SOCAL. Steve 818 508 0582 OR