I've been reading Mark Bowden's book Hue 1968 recently, and one of the things the USMC brought into Hue to turn it into a big pile of rubble, was the M50 Ontos. This was a US Army hand-me-down small tracked vehicle with 6 recoilles rifles mounted on top of it. These proved quite usuable in blasting holes in walls, allowing infantry to go through buildings and walls, rather than use the streets where they an easy target for snipers.
I'm using the Academy kit, which was first released about 10 years ago, so it's quite a decent modern kit. It comes with some PE for things like fender braces, light covers and perforated exhaust covers. The tracks are the rubber band type, which is actually much like the real thing. I haven't build any armor in years, so stuff like weathering will be a nice challenge.
I've completed the lower hull:
And added many parts to the upper hull:
Next up will be the turret with the rifles.