hi, I have a GMC sierra 99 1500 SLE and i want to know if it's possible to convert the front of my truck to a denali or c3. Do the denali headlights,flashers,grill and bumper fits on my sierra?? thx

what year C3 or Denali are you converting to?
Why in god's name do you want to convert your vehicle? There are plenty of aftermarket goodies available to spiff up your truck. Besides what you want to do may require a lot of modification, and a ton of money too! Post a pic of the conversion when you are done!
Good luck.
John

Use the front end off of a cadillac escalade it loos much cleaner and i think it is classier. if your truck is the new style which it prolly is go with the front end from a 00 to present. hope tis helps.