I own a 77 Trail duster and a 77 Ramcharger. Both with 440's. Ramcharger has 33's and a big bumper with a wihcn. The ramcharger is pretty rusted out but the trailduster doesn't have a single rust hole on the entire vehicle. I am planning a switch around one day as the trailduster has the 205 transfer case and the lock out hubs.
I suggest that if you purchase the truck, make sure it has the 203 transfer case. This is the one that has the hi, hi loc, lo, and lo loc handle inside the cab. My ramcharger had a 4 speed in it originally. I can't recall the exact number of the 4 speed but one has a granny gear and the other doesn't. I prefer the 4 speed that doesn't have the granny gear. Seems to work better for quick excelleration and for climbing mountains.
However I switched out the 4 speed because I broke several parts 3 different times inside. Just decided it wasn't worth it to keep fixing the 4 speed. I do beat the living hell out of my trucks though. I have literally replaced every part on the vehicle with the exception of the glass and the main frame and body panels.
I have been scavaging parts from Ramchargers and traildusters for over 15 years now and have never seen a factory wheel flare. Doesn't mean it's not out there but I just havn't ever seen one. Definitely would like to see some pics of the flares as that is new to me.
These trucks make great hunting vehicles. The most important place to look for rust in these trucks are the front floor boards where they meet up to the center hump. The center hump screws down with 4 big bolts and this area seems to like to rot out first. My floors on the ramcharger are absolutely shot. I remedy it with about 4 floor mats on each side.
The 741/2 ramcharger had a removable top that took the top of the door frames with it. They didn't seal worth a crap but when you have the top off it really looks much better not having the door frames on the doors. In my opinion, 74 is the best year.
Sorry about that, I just went on babbeling for a while there.
I can talk ramchargers for a long time as I have spent alot of personal time with my trucks. They were my first Mopars!! The 440 hooked me!