Yes it will fit perfectly. The plate that actually gets mounted to the rail under the headliner. If you can't get someone to mount it then they don't know what they doing.
239
Dodge Charger
Yes
.035 inch
Not without modification
.035 inch
Ram truck and Dodge Magnum wheels are not interchangeable.
When were 3inch magnum
Yes, extensive suspension modifications are required.Yes, extensive suspension modifications are required.
An Ithaca model 51 magnum 3 inch shotgun is worth $275-$325, depending on condition.
Only it if is marked so.
In general, no. Unless the gun is marked for 3 inch (or even 3 1/2 inch) shells, you should not attempt to fire 3 inch Magnum shells, even if they seem to fit. However, if you have a gun made for 2 3/4 inch shells, and have 2 3/4 inch "magnum" shells, IF your gun is safe to shoot, it should be safe to shoot those "baby" magnums.