This is a 67 inch version of the 76 inch Big John. It’s designed for 40 to 60 engines. If you don’t like cutting ribs, you’ll love this short kit. It includes 58 ribs that you don’t have to cut.
For my own personal use, I have created an alternate kit with the front end modified for a Saito 90R3 radial engine. If you want that mod, let me know.