2000 6.5 turbo build or sell

[chebyshortbox65]

So I got a 2000 gm 6.5 out of a 3500HD it is low miles 70,000 was in a service truck that got stolen and burned i tore it down and it has some water damage but will clean up with a hone. Thinking of putting it in a 73 k10 but not sure I am a diesel mechanic by trade and now my way around cat cummins and Detroit but know anything about the 6.5 built a few 7.3 and some duramax. What's the good and bad about these horsepower limits I got the long block intake exhaust manifolds serpentine drive brackets should I let this one go or get it back running I got it and the 4l80e trans for free so give me some info on the 6.5