Mobility-assist hybrid conversion vehicles and methods of manufacturing the same

A replacement floor assembly for converting a hybrid vehicle into a mobility assist hybrid vehicle, comprising:

• a base member having a top side, a bottom side, a front end, a rear end, a left side, and a right side, the front end and forward portions of the left and right sides defining a forward section of said base member, the rear end and rear portions of the left and right sides defining a rear section of said base member;
• a first longitudinal stiffener member mounted to the top side of the forward section of said base member, said first longitudinal stiffener member extending substantially between the front end of said base member and a rear extent of the forward section of said base member;
• a second longitudinal stiffener member mounted to the top side of the forward section of said base member in generally parallel, spaced-apart relation to said first longitudinal stiffener member, said second longitudinal stiffener member extending substantially between the front end of said base member and the rear extent of the forward section of said base member;
• and
• a first cross-member mounted to the top side of said base member at the rear extent of the forward section of said base member, said first cross-member extending substantially between said first longitudinal stiffener member and the second longitudinal stiffener member, said first and second longitudinal stiffener members and said first cross-member defining a battery well therebetween.