Welcome to MTF. As a Murray fanatic I'm always happy to see another Murray owner, especially one that owns a GT that was built before 1989. Your tractor is more than capable of handling ground engaging equipment and I wouldn't worry about the belt drive. These late 70's nd 80's Murray GT's get little to no respect from most because they don't have a hi/lo transaxle. So what, I say. You will be hard pressed to find an owner of one of these tractors that does not rave about the strength and pulling power of these units. Now that these tractors are turning 20, 25 and even 30 years old and are still in service, the respect is slowly getting there. There are certainly no Case, but they were never mean't to be. Would love to see some pics.
boneyard