Not sure if you guys cares but if you're stoned like me atm you can stream all the latest movies on instaflixxer. Been watching with my brother these days =)
The early D10s came with a single exhaust stack, but they had engine problems due to exhaust system routing causing them to switch to the dual stack design in 1980 for the D10L. The D10N and D10R moved back to the single stack with the dual stack re-appearing on the D10R Series II.