This is a kit bash from Tasca/Asuka parts and weathered with Wilder products. It will be featured in the August issue of Military Modelcraft International.
Rothjr, send a PM to BigJohn...since it is his build, he will have all the details. Sending a PM should generate an email to him to check his inbox here, which might get you a quicker response.
Greg
"You could probably use some armor. A Sherman can give you a very nice...edge!"