What it is?...

I just purchased my first A Body Mopar... It's a yellow '67 Dart 170, 2 door sedan (post car which had a 225-6 column shift) and bench seat... It now has, as I was told a '71 Barracuda 340, 4 speed, on the floor, and an 8-3/4 rear... And the motor was rebuilt with 9.5:1 compression... The weather is nice on days when I'm at work... With the weather being so wet and cold here in NJ, I haven't been able to get the car jacked up and get under to look at the motor casting nos... And looking at the drivers side of the front of the block, I can't quite make out the numbers... I can clearly read on the heads above it LPS and 7278 on the flat boss... I will eventually take the valve covers off to read the casting nos and get under the car as soon as the weather gets reasonable... Any suggestions to finding out more of what's under the hood?.. Thanks for any info...