They will do. BP6ES is a slightly colder plug and is probably more suited to wide open and high RPM use (I use BP7ES to BP9ES for my turbo application).
The P stand for projected nose - I believe that these are necessary for the 2TG, 3TG and 18RG.
The number = the heat range (with NGK the colder the plug, the higher the number)
An "R" after the heat range number denotes that is a resistance type plug.
S = normal electrode
Y = electrode has a vee cut in it (for apparently improved flame propagation)
Play with the different plugs until you find one that suits you.