273 302 318 340 build

So while heads are getting checked I started to tear down the 318.
Both the chrome valve covers and LD340 came off very easy. Not sure if either has been run on this engine.
Turns out center divider on intake was cut down. Rocker shafts were oriented correctly. Drive side notch down and front. Pass side down and rear.
Got one head off. Rounded head bolt is holding me up from getting passenger head off.
Front cover off. Original nylon tooth cam gear. TONS of slop in timing chain. Timing set will be replaced if I continue with this engine.
Flat top pistons. Best I could measure with verniers was the dirty piston down in the hole 0.0770". Thats a sloppy measurement.
Removed dist drive gear and tried to remove cam...no go. Looks like its spun the rear cam bearing? And the bearing is now stuck on end of.cam. Cam rotates fine but only pulls out about 1/4". So it looks like new cam bearings are on the list as well. I set the tools down once I couldnt get cam out. Lol
I'll inspect everything tomorrow.
To buy list so far
Timing set
Cam bearings and installed
Cam n lifters
Gasket set
302 heads and machine work.

Thanks all.for advice/opinions