Thanks to everyone,
The Ford has the 158" WB and the GM is 159" but they both have the same rear overhang. The GM is 5" longer front axle to front bumper. I did notice the extra room in the GM cab but the Ford Dog house has much more storage.
I would dearly love to load them up and take them for a test but I dont think the dealer is going to let me load concrete into his brand new RV's or sand bags. He did say we could take them out on the interstate so I guess I should pray for wind.
Like everyone seems to say they both have there strong points and weak points. Ford just upgraded there tow capacity to 8000 lbs this year and I spoke to Thor about this and they said yes they upgraded the extensions last year and the hitch this year with Fords blessing.
Now I will say something controversial but dont blame me, its not my opinion but what I was told. I told the Thor factory rep that the dealer had both in stock and wondered which one to get, he said and I quote Get the Ford we have a larger dealer network for repairs and fewer long term issues with it.
Please dont get mad at me I dont have any idea if it is true or not but it seemed he did not have a dog in this fight and that was his advise. On the other hand I do like the room in the GM and being able to recline the seat more from the driving position. Until I test drive it though I dont have an opinion on the noise or heat.
I do plan on using this RV for touring and not so much for long camping so driver comfort is a high priority.
I wonder if the engine position in the GM being further forward is the reason it seems to to handle better, ie: more weight over the front axle. Does this also make it easier to get to the engine for routine service.
PS: The price of both is exactly the same and they have the same limited option list.