Too heavy and a tad bit too long, I would assume.
A new front end would be in order. Not the body but the subframe and suspension.
Would a compatible tranny even fit in the hump?
I would say it would be easier to convert a Dodge QC into an SUV. Especially since in Mexico they have a Ramcharger that is based off the Ram reg cab, short bed.
Hell, even stretching one of those would be easier!
If you could get it...