Help identifying pistons and cylinder heads

While I was typing, you posted.

1.78 valves = 318 heads. That 360 ran out of breath quicker with this heads. Probably capable of high torque and mileage though.

Installing a 2.02 and porting the bowl area to take advantage of the bigger valve is a crap ton of work. I’d leave that alone and seek a different head.

How is the bottom end?