Ramchargers are much less common for sure! The 1970's topless models are my favorite!

I wouldn't let a small difference in gas mileage factor to heavily into the decision either. One thing I meant to mention in the previous post is that the Ramchargers with the 3 speed transmissions used more fuel than the models with overdrive. Comparing a Ramcharger with a 3 speed transmission and a Grand Cherokee would probably be a 4 mpg or so difference on the highway. (It would vary, depending on the year of the RC, the gear ratio, etc.)

On the highway, the older Ramchargers with the 3 speed automatics will have the engine turning at higher RPM's. The Grand Cherokee, which can standard with the overdrive transmission, would definitely be the more comfortable highway cruiser. If you desire to do so, the 4 speed automatic (the 518 transmission) can be swapped into the older RC's fairly easily from what I've read.