John

Try
http://www.rockauto.com/dbphp/prt,915,CG3388
For purchasing filters Fram CG3388

Also see
http://www.tecnopar.com/download/catalogo.pdf
For a list on page 13 of the various manufacturers equivalent parts

Very simple to make, you need to pull the rubber insert out and heat the end caps up so they can be removed. Ideally with a lathe make up a brass dome end and a brass washer fitted on a brass tube with cross drilled holes in it. Epoxy the ends on. I have made 12 or more now.

I have never used a UAT in any of my planes the pleated paper will draw fuel before it draws air and it will empty the tank to almost nothing. The weight of the UAT in small planes can affect performance and justify not having one. If you have a large plane with plenty of room fit one if it makes you fell happier.

Hope that helps

John