383 Block - Questions

So, found a possible block.

Date code tells me that it's a March 29, 1968, which is good, but some questions:

Cam in the engine has the following specs:

Cam specs--- intake Exhausted
Adv due. 292. 300
Dur @ .050: 242 248
Valve lift .549 .544

Lobe sep: 110.0

Engine was built for drag racing and is bored 60 over.

Another source tells me that since it's 60 over, if I ever want to rebuild, I'll have to sleeve it, because it's bored to it's maximum?

If I'm looking for a 383 for street use, not drag racing, am I wanting to stay away from this particular block?