Thanks for the post! WhiteLs1 has some good information and parts numbers for building up a 5.3. I came across Vetteworks and the fuel ring adapter about a month ago when I was researching how to build the high pressure fuel system. I'm pretty sure the company is located in Vegas too, so maybe it didn't cost as much for locals. I spoke with one of the owners about the part, and in short, the new ring can be TIG welded on or glued after the old ring has been cut out. I'm glad it works for some, but I personally think this is a very expensive and unnecessary rout. There are several aftermarket universal in-tank fuel pumps that will drop right into the Blazer's fuel sending unit and work fine. i just haven't determined which one will work the best yet. If anyone is interested in the Vettework ring, here is the link: http://www.vetteworksonline.net/cata...php?cPath=9_68 .