While at OSH this year, I stopped by Vans booth to see what's new, and grabbed the new catalog. When I walked around the corner, I then saw Cleaveland Aircraft Tool's Booth, and noticed some seat laying there. I mentioned to someone that it seems that nobody makes seats for the 4.
One of the workers there heard me say that and replied " WE DO!".
I was able to see their product, and it's great! Memory foam and all!
The person that makes them is called DJ, and certainly seems to know how to "build" you a comfortable seat. These will be the ones going in my 4, for sure. Check them out at,
WWW.Cleavelandtool.com