Nissan does not sell the "old" style anymore. If you pull up the P/N for the manifolds the newer superceding part carries the old P/N. I know because that's how I ordered mine. I looked it up in FAST for my model year and got the newer style casting when I ordered it. Unless you run across a dealer with old stock (very doubtful seeing all the ones that have been replaced) you will get the new casting.

The only ones that don't have the cats done the same way are the early federals with only 2 cats. The manifolds are the same for those I believe, will need to go back and check.

I ordered mine from www.nissanparts.cc for less than $70 last year. I haven't checked prices on it again for obvious reasons.