Another vote to rebuild the 12. The ONLY time you'll wish you had more power is with a 48 inch mower in grass you let grow too long. And even then, with a 14 or a 16, you'll still wish you had more ummph. So the 12 is a great workhorse. I use a 48 inch deck on my 108 that has a 12hp/K301 in it now. Plenty of power.
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