You have a nice expensive mower. Because of precision dimensions and weight of blades {balancing}, I would stay with original part. When one chooses to go to an alternate blade, it might be the start of a problem to come. Deck spindles, bearings, not to mention internal engine wear.You might ask dealer for a factory mulching blade for your mower. I would definitely stay with factory parts. Have you checked Bobcat Procat website for parts? Good luck, Mark