That B209C mid, goofy front mount one, requires a larger hole. You’d have to embiggen your cabinet hole by about a 1/4” for it to fit. Then your cabinet will be too big to accommodate the proper rear mount B209B. I’ve done all that with a router, wood donuts and days of woodworking. Blech. I would really suggest putting it back and stepping away.
Bozaks look easy, appear easy, and suck the unwary in. I try to tell everyone I can to stay away, don’t do it. There are certain years, certain models, and you really need to be on your A game with woodworking and electronics to get these !?$&@);; ?(;:/- properly updated. You’ll be certain Iam lying to you, or just being an ass. But Iam not, or at least not trying to be. Bozaks will tear you and your family apart if you aren’t careful.
Biggles