RC used stock rods for 2 upgrades. Bushed small ends and/or larger bolts. Believe both were shot peened. Gonna be stronger than stock.
That's a BF cam!
What's under the washer on the other end?
Is the rest of the engine OK? The HA kit OK? Yes and yes, put it back together!! AFTER you do the head
The rings are available from Total Seal and I can get you the part numbers.