13:1 Compression Pistons in 340 Small Block

I will start the questioning to get the ball rolling for when the experts to chime in.
1. Is this a race or street engine?
2. Do you plan on using race fuel all the time?
3.Do you plan on getting the J heads ported?

Oh yea, WELCOME ABOARD

Thank you all for the responses, I guess I can try to answer all the questions I’ve seen so far.

1. The heads as far as I know are Stock J heads and I think have been machined down a little bit.

2. I’ll probably run high octane, I’ll run 93+

3. It’s gonna be a street/strip motor. Nothing crazy.

Its going to be going into a 1970 Dodge Dart Swinger, it’s a 340 car but the block isn’t numbers matching, B5 Blue exterior and B5 interior with a light blue tail strip and it’s an automatic car.