Welcome to the site
First the pros:
Better mpg than gasser for sure
More power than a gasser
Better tunability( you can get alot more power with simple add ons)
Longer lasting if maintained
Will pull the heck out of most anything
The cons:?????? 
Seriously the only one I can think of is price of fuel
__________________ 06 2500 CREW CAB 4X4 LBZ
4" DIAMOND EYE EXHAUST, KITTY RAN OFF!!!
DIABLO @ 120HP. 285/75 BFG's RUNNIN ON ULTRA 16's
PIONEER HEAD UNIT RUNNIN SCOSCHE AMP W MTX TWINS
AIR BOX IMPELLER REMOVED!! RESONATOR PLUGGED !!!
AUTOMETER ULTRALITE GAUGES IN POD. TRANSGO JR 
SOME OTHER EXTERIOR GOODIES AS WELL WORK RIG (theirs but mine)
O7.5 3500 CREW, LMM, ROYAL UTILITY BED
4" DIAMOND EYE EXHAUST.DPF???KITTY?? QUADZILLA PROGRAMMER. MTX AMP AND 10" TWINS IN THE BACK. STEPS,VISORS,BUG SHEILD. AIRBOX IMPELLER REMOVED,RESONATOR PLUGGED,LOTS OF PRETTY DIAMOND PLATE EVERYWHERE  |