I'd like to give a huge THANK YOU to Brad, the Moderator over the Truck Campers forum for his assistance with this thread. Thanks also to RVcrazed51 for his request for this thread. Post photos ...
Heartland uses a "Drop" frame in front of their larger units. It a a 12" frame, and one of the benefits is getting HUGE basement while still being able to stand up in the entire bedroom and keeping total height of fiver around the 13'4" range.