Hi Maunel,
Boca Bearings has a product number, but I do not have it handy. I do not know of different bearings for the different series, I *think* the bearings did not change.
If you are using a "stock" style, sprinkler venturi, I go with a .181 hole. Also, 10%nitro, 22% oil, 1/2 and 1/2 fuel. Props can range from 11 1/2" to 12" and 5 -6 pitch. I have some AHM props that are 11 1/2-6 1/2 that work real well, but they are no longer available. 6 1/2 pitch is not out of the question. I do not know launch rpm, it is just na "cackle" on the ground.
53 oz. is a piece of cake for a ST 46!
Bill <><