I have actually seen three different boots.
The original (pre-recall) had an odd "jog" in it. It seemed to be part hard plastic and part rubber. They are few and far between, right now.
The most common (post-recall) is one piece, rubber, and has a nipple for the PVC vent pipe, just before the throttle body.
The third type is (apparently) the least common. It's one piece, rubber, and looks just like the recall piece, but does NOT have the nipple for the PVC pipe. I have seen exactly one of these. I have no idea why it even existed, unless it was actually for some other car. (80s TransAms used the same air filter canister, so there is that...)
Edit - I had an Isuzu in my 3.4 car, for a while. Yeah... the cables are *right* where the boot wants to be. I think I ran my cables "over", but it's been a while. Ended up doing a cone type filter and building a rain shield for it. May still have all the pieces around.