Organisation - Borrow from Lizardfolk?
Shazaks appear to be about as numerous as AD&D Lizard Men, so the basic organisation is OK. However, they also ride
Mobats, so I'd add them to the organisation.
A standard Dire Bat / Mobat can carry up to 172 pounds when flying (Str 17 light load of 86 lbs time 2 for being Large). 172 lbs is significantly less than the weight of a Shazak. We'd need a Huge Mobat (e.g. advanced to 10+ HD) to carry a armoured Shazak leader, since they can fly with 1064 lb loads.
We could make them
lighter than a standard lizard folk - they are a foot shorter, after all. If we make them 5-6 footers instead of 6-7 footers they'd weigh 125-160 pounds. It makes their higher Strength a little odd, but we don't have to worry about the Huge mobats.
So, something like:
Organization: Gang (2-3), band (6-10 plus 50% noncombatants plus 1 leader of 3rd-6th level and 0-2 mobats), or tribe (30-60 plus 2 lieutenants of 3rd-6th level and 1 leader of 4th-10th level and 2-8 mobats)
Treasure - Borrow from Lizardfolk? (I can see a theme)
The Treasure Types are different, AD&D Lizard Men have D, while Shazaks have A (plus K individually):
Type A:
1,000-3,000 copper pieces: 25%
200-2,000 silver pieces: 30%
1,000-6,000 gold pieces: 40%
300-1,800 platinum or electrum pieces: 35%
10-40 gems: 60%
2-12 art objects: 50%
Any 3 magical items: 30%
Type D:
1,000-6,000 copper pieces: 10%
1,000-10,000 silver pieces: 15%
1,000-3,000 gold pieces: 50%
100-600 platinum or electrum pieces: 15%
1-10 gems: 30%
1-6 art objects: 25%
Any 2 magical items + 1 potion: 15%
So, that's roughly twice as many gems and art objects, the same number of magic items (although without restricting one to a potion) and 2-5 times as much coins. That suggests:
Treasure: Double coins, double goods, standard items
Level Adjustment - Did we agree on +1?
+1 LA is fine, methinks.
Oh, plus Description, fluff, tactics etc.
Mortis
I'd like to leave that until we have all the stats ironed out.
Speaking of which, the Shazak still has a basic Lizardfolk's saves.
Its Humanoid HD give it Fort +1, Ref +3, and Will +1. Its ability bonuses are Con +2, Dex +0 and Wis +0.
That works out to:
Saves: Fort +3, Ref +3, and Will +1.
Anything else in the stats?