And this is def gonna be a tit for tat thread. This will always be a back and forth battle between B-series and D-series owners. If you have a D15B now, then i say build it. If you had a B in your car, i'd say build that...but i wouldnt take out the D15B just to do an expensive B swap.
...but, if you do decide to swap in a B...donate your d15b to me.

I need a backup motor.