This is a vehicle from the game Empire at War
I don't have a good cost in mind so input is appreciated

2M Repulsor Tank (Imperial)
HP-130
Def-16
Attack-10
Damage-40
SA
Mounted Weapon
Shields 2
Stable Footing
Anti-Infantry Cannon (usable for attacks of opportunity)
Attack 12 does 20 damage

With a defense as high as it is and it large number of HP, and a decent attack (all more than an ATST) I would find it tough to cost less than 54, though 60 might be too high. Playtest it at 55 then adjust it from there.

I am just throwing stat ideas around, if you have ever seen it you would get the idea about the level of modeling skill it would require, which I do not have