Major C-10 Malfunctions

[skyreep1]

Okay, I have two 1971 C-10's, one with a 350 3 on the column, and one with an automatic 307.

Problems:

350= Oil fouled plugs and major power/torque loss
307= Metal shavings found in transmission pan, when shifted, acts like it's in park

Okay so I have a feeling the 307 requires and all new tranny, probably around $1,000.

Sooo focusing on the other one, what exactly needs to be done to have the truck run right and stop having oil fouled plugs?
I.E. Part kits I need to buy, and replacement procedures. It would be absolutely outstanding if I don't have to take the block out.

I hope you guys can help me out on here, I'm at a loss, fairly broke, and want to have one drivable before summer.

Thanks