How many of us are there? Owners of Dodge based RV's?

Stupid question but im curious. How are you going to install it the tradition through the front or throught the passenger side door?? Only reason i ask is that i have a buddy that had a few mid 70's b100 and b200 and he starts theeasiest way to remove the motor and install is through the passenger slides door. Anybody else heard this or does he have a point?