Tony, what is the problem with the original tank? I have seen pickup problems on the 83 and 84 tanks. Something comes apart in the pickup arrangement. This can be solved using an OE vw fuel resevoir that came on the 85 cabrio and foxes. Someone had a drawing on the Production website of what I am talking about. The return from the fuel injection is plumbed into this resevoir along with an external prepump. I can look the OE number up for you if you are interested. Email me nospam at bocafed dot org.