Originally Posted by nosticks
The 2015's had the larger windshield that wrapped back into the roofline. There were some warranty claims about it cracking. Later production models, Thor changed the front of the cab and made the windshield a little smaller to solve the problem. Not sure when the change occurred, but if you had them side by side you could immediately tell the difference.
I believe today they no longer build them on the 350 chassis. The 450 much stronger.
For a while the 24.1's were still on the 350 chassis.
Our 24.1 is on the E-350 chassis (when all Axis/Vegas units were on the 350 chassis).
Its basically all about weight: The E-450 can handle more weight. If you're planning on towing something big then the E-450 will be more suited for you; if not then you're fine (our E-350 based Axis pulls a 3800lb car without issue).