If you really wanted to do the recall, they may still honor it.
I bought a 93 cherokee last year, 2wd so I was curious if it had posi. since I knew would be driving it through snow. I contacted jeep with the vin and requested a build sheet. They sent me the sheet, plus told me of an open recall for the brake rotors. They were recalled in the "salt belt" states because they could rust out and disconnect from the hub.
Anyway, 2 months ago I brought the jeep (17 years old, 15 years after the recall was issued, and 229k miles later) they gave me a free brake job! How sweet is that?
BTW, I see these thumb latches all the time on old tanks on ebay and elsewhere and the tanks with petcock and cap and latch only bring around 50 - 75 dollars. Ha anyone actually seen one sell on ebay for 125 or 150?