New reproduction battery hold down for 6 Volt only. This is the larger hold down. These are made in the US. Bare metal and ready for paint. This hold downs inside dimensions are 10 1/4" by 7 1/8". Fits:
I was dealing with 2 problems. First the clearance between the seat was less than 5 inches, second was getting on the pedals. You had to spread your legs around the steering wheel to get a foot up. The 15" option mostly solved these problems. This was done on my 67 CJ5 V6. I also machined a plastic bushing to use my existing 2 3/8" horn button.