Hi Mark,
I emailed Ralph he responded to me. I dont think he would mind my posting his response here.
Tom,
Yes I do modify the RV-8 shade to fit the RV-4 airplane.
The RV-8 shade is 15" wide by 46" long and I cut off the square front and taper it to fit the RV-4 canopy.
All canopies are different lengths and I suggest that you place a piece of electrical tape above the pilot head and the passengers and see the length that your want for coverage.
I will cut and fit to your measurements
The cost of the shade is $245 plus $12 shipping in a PVC pipe by postal priority mail. Shipping damages required.
I don't have a credit card system, so mail me a check with shipping address.
Thanks for your interest in my shade.Ralph Koger
1947 W 1st St Extension
Boone, IA 50036
515-432-5714