This Top-end engine kit is engineered to original Oettinger standards, and includes everything required to make the switch. This quality reproduction retains all of the original details from year gone by. From the OEM manufactured cylinder heads that maintain the original 7.5:1 compression ratio to the reproduction Solex 32PBIC carburetors, we've covered all bases to create the premier 36hp engine kit. *Please note: Modification to the rain gutter is required for convertible models. If using this kit with truck, Karmann Ghia, or Coachbuilt models, air cleaner elbows are necessary.