Today, dollar for dollar, is the 318 faster than the 340 ???
The way way post above about paying to hanging new DC pistons on my old 360's rods was an answer to the post above it about costs. It costed the same EACH to R&R pressed pin pistons on a 2.2 as it is for a 318, 360, 383, 440.....
All the work was done (20-25 years ago or so) at a well known Machine Shop in Auburn that does many NHRA team's engines, DG Machine. I did have a lot more done to that E58 360, Decks were way off so it was shaved 0.030". Heads were LIGHTLY ported at home just to get the huge lumps and cast marks out, then rebuilt without ex rotators at his shop.
That engine came out of a wrecked Washington State Patrol 1987 'Diplomat' with 45,000 miles. It went in to 66 Dodge Dart Wagon for two years then in a 1975 B200 HIPPY van with a OD 883 and lived for another 150,000+ miles. The lady still has it and is still a Hippy but she still has a lead foot too.