Waking Up a Turd

I would like to thank everyone who has contributed.
You have given me a lot to think about, and steered me in the right directions.
Pulling this turd will be my winter project, I wont get to it until after hunting season for sure.
1) Im going to pull it, disassemble and figure out exactly what i have. knowing that will determine the course of action. But some things i do know will happen.
2) It will get a new camshaft more suited for street duty (even though it sounds fantastic now) Im going to entertain the idea of a hyd roller, and weigh the pros and cons of it. and of course a new timing chain.
3) Intake manifold. Likely a performer RPM, or a LD340. I kind of dig the retro theme of the truck, a LD340 would be great. I dont suppose anyone has one to sell?
4) check out the heads. first option, Rebuild the J heads with 2.02 valves, and try my hand at some mild port work.
second option: If I do determine i need more compression, swap the heads for something with a smaller chamber, Again this will depend on what pistons are in it Likely Edelbrock or Indy.
5) sometime in the future, Source an OD transmission, and regear the diff. Figure out what stall converter i have now, Might be a great time for a swap while the engine is out.

All of that should make this truck fun. I will add to this threat with some of my findings as i go. Hopefully the bottom end is salvageable. If not i might be looking for another core to start with.