Thought I had one found, but gueese not. so btt. may consider reading a 30-31 tank that looks good inside, still need to pressure test it for leaks for a good 28-29 tank with the right date range. tank that I am replacing has a date of 3-11, lots of pin holes on the bottom( 23 of them), but very nice on the outside. Not wanting to cut the firewall out of that one as it it still good for a ratrodder or streetrodder. Rod