The 955 and 1355 were products of WFE meddling with it's 'heritage' brands. They were basically MM's Long Life engine and front axle mated to Oliver's transaxle and three-point system, a design which debuted with the first White-branded farm tractor. The 1355 was sold in White, Oliver, and Cockshutt livery as the 2270, and the 955 was also sold by Oliver and Cockshutt. They were the last trace of MM's engines, as White Motor Company did not believe in building their own engines. After the old names were dropped in favor of White, WFE bought its engines from outside manufacturers.
The cab on my G1000 is from Full Vision, Inc. I'm not sure if it was made by Hiniker, produced under licence, or anything like that, but it does look very similar. Not sure how they'd compare size-wise, though.