So, I think my next project will be rebuilding the motor in my K5 next winter. I'm only wanting around 300-350 HP, but I am a fan of long rods. Small block chryslers all had 6.123 inch rods, why can't my Chevy? I was thinking some Eagle I beams. The only problem I have is I can't find a good low compression piston for this set up. I want 9:1 CR MAX! I want to be able to run 87 octane with out blowing it up(this is kind of an expedition truck, and lots of destinations only have the low octane stuff. I have some mid '70s heads laying around, I was thinking 1.94/1.60s, a good dual plane, a comp XE262 cam, a Holley Street Avenger 670(got one that is almost brand new and a set of headers. What do you all think? a 6 inch rod should rever better and wear better as well.