Biscuit vs. Spool Motor Mounts

I was just curious as I may be changing my plans for my 69 Dart. I have a newly built 400/470 stroker motor that I had built for the car and a DC big block spool k-frame to install it in the car. When I started building it, I wanted something a little more radical with plans on going to the track. However, things have changed and now I don't see that happening so the car will only be driven on the street. That being the case, I would rather opt for a more stockish 340 for the car and sell the 470. In the event I do that, I have both types of k-frames available for a small block and would prefer to go with whichever one allows the motor to sit lower in the car.