They are bolted on
The chasis is usually both bolted and welded and even riveted in the trucks.
I looked at my remote filter on my 93 S10 Blazer and it is bolted to the inner fender which shouldn't need to be removed to remove the fender.
Pretty much identical only difference is the rear fender supports. The 650 has external fender struts to support the rear fender which are bolted on, the 1100 has a subframe which supports the fender which is welded in place.
welded on
bolted in from new
Bolted on
because it is
Its welded.
I have an 87 Ranger and it is welded on.
most of my friends welded it behind the back bumper and twisted it up from under the bumper. You can place it anywhere as its welded on a safe and rigid place
they are usually bolted on in the front of the converter.
It's bolted on the body, welded on the door. Door pin/bushing replacement guide: http://www.digitalrevo.com/jeep/doorpins.html