Thats a great tone youre going for.
Mike Ness has, as far as i kow, almost always used a modded Fender Bassman (and Marshall 4x10 cabs), and uses a Boss SD-1 pedal. The other guitarrist plays
Satellite Amps...
I dont know what you are currently using gearwise...but to get near that sound, i would stay away from distortion pedals, if anything, i would use overdrive pedals, and VERY low gain settings on the amp. SD dont use much gain, its "crunch" settings maximum, also the yuse P90 pickups which arent high output also...I would recommend to - depending on what you are using - forget the pedal, just use lowgain/crunch settings, many mids and a good amount of highs...or get an overdrive pedal, and use your amp clean only.
If you are going for a new amp - yeah, the common Marshalls will get you pretty close.
Also remember, that a guitar sound on CD does never sound like a "real" guitar sound, its the unhuman tight combination of guitar, bass and drums, EQd and produced to the max you are hearing. If you would hear the guitar tracks alone, they would propably sound pretty "thin"...