Sometimes part #'s change w/o the part making any meaningful change. The late model fuel tanks is different than early. '88 is a funny transition year so anything can happen. I’d email Jim Levie (jlevie) and ask him. He’s pretty familiar with fuel tanks and would probably know if the difference between early and late tanks impacted the design of that hose.
That hose always looks awful because it gets so dirty. But since neither tank no filler pipe moves, the hose is under pretty much no stress it’s entire life. I’d suggest double-checking it’s condition. Doesn’t it really look like it’s failing or are you just seeing 25yrs of dirt and neglect? I’ve removed the filler pipe 4x and those hoses have always looked awful yet were actually quite stout and serviceable.
There isn’t much in the way of “while you’re in there” in this task. You’ll have to unfasten the filler pipe so you can wiggle it away from the tank a little, but that’s really all there is to it.
I once used a hole saw to remove the filler pipe restriction. The idea was to be able to use fuel jugs with bigger hoses. In order to keep debris out of the tank I removed your filler pipe hose. So if you’re interested in removing that restriction, you could do that while you have the hose removed. Just be sure to spray something down the filler pipe afterwards to wash out debris.
