The information is specific for the V1 you will have to put some tape on the jaws of the lathe to hold the cylinder so you can cut the top down and a relief so it will fit into the cylinder head.
But these timings are good for most 50/50 setups.
Ringland porting and lightning the Piston by drilling holes in it will keep the engine in balance at higher RPMs and the ringland porting will help prevent the piston ring from fluttering at high RPMs.
Buy intake timing I assume you're referring to the Piston Port timing not the transfer Port timing.
The thing is you really need to get the transfer Port timing and close to 120 degrees with a blow down in the range of 22/24 Max or you'll never get anywhere close to the 50-50 Club (edited)