48" mowers cut great as is IMO. Leave the design alone and don't go cutting/welding on them. I agree about a speed up pulley, but I've never used one and have never needed to use one.
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Daniel G.
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(May 1970) 147 w/an IH spring assist, 48" deck, 42" blade, 1969 73, #2 trailer, 10" Brinly plow and (on loan) Dad's #2 tiller.
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