I don't know what heads are on this but I'd would say this engine would be the way you would have bought it in 1970 minus the electronic orange ignition module. The front and rear carbs don't even have metering plates which I plan to get into this winter at minimum. (Only issue is over fuels during any hard acceleration)
I was unable to get info if anything was done on engine when purchased last year.
Was reading up on everything TTI headers to aluminum heads, higher compression, cam upgrade, FB fuel injected throttle bodies etc.
I considered a 512 upgrade but this engine seems tight.
For me I drive approx 1.5 tanks of fuel this year. Miss that sound I had 25 years ago with a well worked 340 1970 cuda.
A lot of good info on this forum and I'm listening. Thankyou