1994 Chevrolet k2500 service truck

I have a 94 chevy service truck runs good 5.7 350 needs clutches in transmission will go forward in 1st gear and reverse works it has black fluid but no metal shavings 4x4 works good has ladder rack and western plow mount and wiring one box on bed has a small hole in bottom the rest of the rust on the bed is on the doors make offer