Tank Builder

There is a guy in Northern California that does it. He builds the -9 tanks for vans, and built a set for my -4 after all the slosh pealed off the inside of the tanks I built. I don't have his name handy, but if you call vans they know who he is. He did a nice job.
 
Fuel tanks

I know the thread is old, but here is the information for the builder that vans recommends. Evan Johnson evansaviationproducts.com