273 question

For $3500. you can buy a complete, remanufactured long block.
Why so much and why .060 over bore ?
If you did go that route you would need to sonic check the block to see if the block can safely even be bored that much oversize.
I've never seen a long block for a mopar for $3,500. The machine shop probably wants to go 0.060" because it's easier for them, due to laziness I had a machine shop admit it