SX2 layshaft adaptor and QUICK SX question

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I was directed here from another source. I was told there is a developed adaptor layshaft where you can use B44 spurs and slippers on your Cat SX. I tried the search option and was getting no where. I am sorry if this post has been covered many times.

I bought a new to me Cat sx, Can some one tell me the stock interal gearing and stock spur that came with the kit. I did some research and I believe its the 81 tooth and 2.6 internal. Please correct me if I a wrong as I am placing a spares order in the next few days.