Thanks for all the digging. The "stock" thing is kind of a joke, that's not what's going on the car, just what's on it now.
About the numbers, that was exactly the clarification I needed. The 93334 kit uses that 90361 gasket. It's a little small for my liking but like others, I don't want to trim a metal core gasket.
'91 LX 5.0 Daily Driver/AutoXer. Oh Yeah, I've gotta stock this and a stock that, oh and a stock thingamajig. Just waiting on the stock whatchamacallit.