Nv3500 vs ax15

AX-15; * 3.83-2.33-1.44-1.00-.79od splits of; .61-.620-.690-.79
NV/Dak; 3.49-2.14-1.38-1.00-.73od splits of; .61-.645-.725-.73
The Dak is pretty tall for your Dart, the belly may get to dragging on the ground.

I like the AX and if I was younger, I would put one behind a peppy hi-compression 318