It's a 14.5/38 Gear. It seemed like the deck was set up as a mulching deck. The side discharge had a housing that I just took off, but it had three pieces to it.
She couldn't find her Operator's Manual. I told her I could find one online; turns out John Deere doesn't release manuals for free in pdf. She had an extra set of new blades which I installed.
The ones I took off looked like mulching blades, they had a longer cutting edge on them.
Also adjusted the deck by a couple of rods that support it from the front deck to the frame. That seemed to bring the deck parallel to the ground. Also put the anti-scalping rollers down a little.
I'd like to see the specs for that mulching setup; looks like JD keeps their manuals a big secret. The JD rep was a dick and I hung up on the guy.
Repair manuals can be had off of Ebay, don't want to spend $$$ though....