I actually set it up so that you can mate the new frame to any 3" coil motor we've ever made -- obviously some are much more suitable than others.
For instance -- I wouldn't bother to mate it to a Z v.1 or Z v.2 motor -- but you COULD if you wanted to. I have Z v.4 coils with long enough formers (these can fit NS v.1 and v.2 motors as well as Z v.3 motors) and NS v.3 coils (which will fit the X series and NS v.3)... and, of course, coils for the TEAM motors once I get the new spiders in that will work on these frames.