Chevrolet K10 4x4 4 speed transmission California Truck C10 4x4

Helping a friend sell His little BABY because he needs money and has owned for 20 years. Nice solid DRY Big Pine, alifornia truck. Been on a horse ranch for many years. I only see one little rust spot in the rear of the pass cab corner ( look at Pic) and no other rust through anywhere I can see ( very very DRY claifornia truck.4 speed trans works good, lutch good, ower steering good, owerbrakes good, ights, linkers backup lights good, ipers good, x4 good, actory disc brakes in front, lug 16 inch rare wheels and large caps, ou can drive this truck withyour pinky finger,This truck was running good and then started running funny. He rebuilt the carb, ut new points, ut RPMs come up very slow and back fires sometimes like timing is off. One of the mufflers was swollen and thought it might have been plugged so he cut off but it didn't fix problem. Another friend said maybe the timing chain is stretched out? another friend said maybe needs a valve job?? engine runs quiet with no ticks or smoke?? pick a part sells 350 motorswith warranty for $400 or put a hot rod engine in it or fix the problem( but easy fix for a great truck) This is a solid California truck. I have been watching trucks like this selling on ebay and people are hiding the rust because they never show the underside or problem areas. I am showingall areas in the pics andthis truck is asolid old californiasteel C10 4x4 here. Truck still runs and drives except the motor issue I was talking about above. Also has dings and scratches from brush etcand being a work truck

On Dec-02-15 at 17:37:45 PST, eller added the following information:

PLEASE READ ......head lights, ail light, ear side lights and front bumper lights all working/// but brake lights stopped working and blinkers stopped working. I am having a mechanic come over tomorrow afternoon to work on them. I will update info ASAP