The Victa 8-34E (MTD) just shows the parts in common with the blue MTD.
The E on the end of 8-34 stands for electric start ,I would say your blue MTD has never had a battery.
In the below image of the blue MTD I have circled the position for the pull start cord and handle the 8-34E would not have this modification.
The Victa MTD mowers are red.(of this type)
Rear wheels on the 8 hp red Victa ride on mowers do not bolt on the same as the blue MTD. (see pic below)
I've only seen two of these blue MTD ride on mowers and both are missing the model name but we know the manufacturer is MTD..
From wikipedia. MTD Products is an American manufacturer of outdoor power equipment for the mass market. Headquartered in Valley City, Ohio, USA, the company began in 1932 and is a family-owned, private company. It originated as a tool and die maker (Modern Tool and Die Company). MTD's main competitors are Stihl, Ariens, Snapper Inc., John Deere and Husqvarna.
Over the years, MTD acquired the Troy-Bilt, Bolens, Cub Cadet, and Yard-Man brands and/or companies. MTD also private labels for other brands, including Sears Craftsman, under the "247" model prefix.
In 1975 MTD purchased the Yard-Man name from Montgomery Ward.