That 76mm gun on the Dodge M37 looks like a Yugoslav 76mm M48 mountain gun
I’ve been looking at a whole heap of old Indonesian Archive images from this Facebook Page: Priyono Bitles Combat | Facebook. There are some interesting images of Indonesian vehicles (some I didn’t even know we used) as well as other interesting & rare images of historical events and the like (ships, aircrafts, infantry, etc.). I’d suggest taking a look if you’re interested in that sort of stuff
What i found from there was that for the new light tank procurement program in around 1983, two wildly different designs was tested, but ultimately went with the marked-up Alvis Scorpions due to “reasons”.
Vehicles Tested
The first is the Wiesel which we already know was tested with the .50 cal turret, but apparently it was also tested the 20mm variant as well
Wiesel
The second design we tested was the Austrian SK-105 Kürassier, honestly I have no clue about the variant differences, but since they’re firing at night I would assume it has thermals or NVD
Although we didnt buy either of them, the SK105 turret was eventually used in the amx 13 retrofit (yonkav 2)
with that out of the way here are some additional rare images of tanks/vehicles we used
ERC 90 F1 LYNX (shocking i know, no mention anywhere else but there's an image)
LVT(A)(4)


Jeep CJ-7 w/ M2B 50.cal

Jeep CJ-7 w/ LRAC F1 Rocket


Jeep (?) w/ RBS70

AMX-10P Marine (20mm Toucan II)



AMX-10P PAC-90



Source of images
Wiesel
SK105
ERC 90 LYNX
LVT (A)(4)
Jeep CJ-7 w/ M2B
Jeep CJ-7 w/ LRAC F1
Jeep (?) w/ RBS70
GAZ-69 w/ Recoilless
AMX-10P Marine (Toucan II)
AMX-10P PAC-90
M3 Stuart