It's sad that I have twelve years experience as a machinist and I didn't pay any attention to the specs on this thing , instead relying on the pictures and forming dimensions in my head. Now I have this in hand , all I can say is ...this thing is HUGE. I wanted to install it on my T-34 Mentor and now I can safely say that the aircraft will never have a chance at breaking ground with this behemoth attached to its belly..lol. Did I mention..." It's HUGE" (astronaut farmer).