72 340 4 Speed Motor - What's it Worth

I have one with a June 1972 cast date that has a forged crank in it. Hard to tell unless it's torn down so you can look at it. Mine is .030" over and was said to run good, but when I pulled one of the X heads, there is side to side slop in a couple of the bores. The exhaust valves show some carbon build up on those same cylinders.

Might just build a 360 for it.