Using B16's beautiful picture above you take the letters on the crank next to the rod journal and number on the rod you will be using for that journal and that will tell you a color bearing for it for example if your rod journal says A and the rod that you will be using for it has the number 3 on it, then you would look up A3 in the helms manual and that will give you a color code such as yellow, brown, red etc.
now for the main bearings you would take the numbers off the crank and you will find five letters on the back of the block by where the flywheel goes if the first letter is B for instance and the first number on your crank is 3 then you would look up B3 in the helms and find the color for it, and that would be your first bearing closest to the pulley
they do sell standard bearings for hondas through aftermarket suppliers but it requires a machine shop to machine your block to all one specific size, i prefer using the OEM honda bearings in my own opinion,
remember to plastigauge all your internals before the final bolt down, to make sure they are all within tolerances.