can someone clear this up for me...i am planning on purchasing the dohc zc motor + tranny combo from nippon-motors.....my buddy said that i could not use the tranny that came with that package due to the fact that i would need to buy b-series mounts....is this correct?

 

No, dohc zc is still a D-series motor, I.E. the tranny is also D-series so it will bolt right in.
HTH