I think you're referring to the recall of the 914. From what I'm told, the car was recalled due to problems with battery acid getting onto the fuel lines in the engine compartment.
The recall replaced the original braided-cloth-over-rubber hoses with new hoses (I think of the rubber-over-cloth-over-rubber kind; not sure) and put a cover on the battery. The plastic lines in the center tunnel were not changed, and I don't think that the two other plastic lines (fuel pump area to top side of engine tin) were, either.
This sort of recall is a one-time-only-per-car deal. You'll have to get your dealer to check with PCNA to see if it has gone through the recall program. Most cars have. Also, the program is old enough that some dealers will try not to honor it. I don't know if that's legal or not, but they sometimes do try.