SCAT, and a call to competition products to put together the crank/rods/bearings/pistons. no need to go over 9.5:1
2 years ago, you could buy a new GM block, new GM heads, and a complete rotating assembly and Cam kit for under $3500. today, you may have to shell out an extra few
found some GLM (Good Luck Marine)
however looks like everyone is sold out.
try calling here: http://www.2040-parts.com/new-oem-volvo-ford-exhaust-elbow-3854427-3855269-lot-71-i2151024/
I never had luck with pertronix and ended up going back to points every time.
However that was 20 years ago.
Go to their website. they have schematics in the library
that sucks... Feel for you (BTW, would never say ITYS)
hopefully its just a bit of the spark plug got stuck in a valve and bent the valve. Pull the heads and get eyeballs in there.
the spark plugs look like they ran super hot.
SAE inverted flare with 3/8-24 threads. A very specific port tool, and a custom port tap.
https://www.tristareng.com/portfolio-gallery/custom-sae-j512-inverted-flare-seat-tool/
A standard tap will not work
It will need to be custom ground with clearance for the inverted flare
If you have an outboard (guessing from the lack of info), the magnets are what induce a magnetic field in the coil.
So you may need a new flywheel, or if you have the magnets, epoxy them back in
