Howdy, Jon.
I found the E-79 resin kit on the Wave page:
E-79:
http://www.rakuten.co.jp/be-j/460594/483116/531997/#493206
34,800 yen is about $316 USD. Not a cheap kit!
The JS-152m is not listed on the Wave website. It's a conversion kit (turret only) to be used with a Dragon JS-2m chassis.
There was a writeup about both kits in
Hobby Japan a while back. I'll dig through my back issues and see what I can find.
To my knowledge, there were no other models from
Panzer Front produced. I have seen a scratchbuilt Shortbull, CY-122c, and Aureole, though.