Thanks, BARGeezer for your responses. I have come across the tube and nose cone lengths.
I think when I get the time I will put some measurements to the parts drawings of the BR Starfighter and post them here.

The Buck Roger Starfighter and the Blackhawk are quite different in size and construction.
The Starfighter is easier to construct.

I want to do an upscale of the Starfighter using BT-60 tubes and PNC-60RL nose cones. For now, I'm looking at what the size would be for all the parts, but plan on building one.