It just so happens that I have a 1978 Boler
1700 parked right in my driveway. It even has the rail on it for that "Bleeping, censored accursed" tarp-type awning - the kind that when you have used it once you would happily pay big bucks for the privilege of never having to do THAT again!
And yes, if it is gonna be high enough for the door to open, it will be WAY too high to install the awning when you are standing on the ground (maybe on a B13 it would be do-able, but the 1700 is a LOT taller trailer, which needs a step to get & out of it!)
Also, please note that you will need to have TWO people putting the awning into the rail - one to feed it into the end of the rail and one to keep tugging it along.
THEN - when it is installed, and you have the poles in place and tent stakes to hold the poles (sort of) upright, the awning will still sag and catch the door top anyway.....
So, yes, when I sell my Boler
, there is an awning included and it is nearly 100% unused!
I'll go measure how high that rail is above the door. Its raining hard right now and I won't be in at all tomorrow, so Thurs I'll go measure the space between the rail and door drip cap and post it for you.