No, it's not a straight swap. The frame on the 102 is too narrow to accept the larger blower housing from the K321. And the K321 that you have, what is it from, another Cub like a 149? because if it's out a John Deere the shaft will be too long, if it's out of a wheel horse then the base of the block is the wrong design. so many variables.
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128 X 2, 129, 149, 1250, 1450 x 2
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