Been a long time since I looked at a flathead Ford six's guts, but ARP bolts would be a MINIMUM for the lower end. Maybe there's a modern engine with better rods that you could modify to use. I used to race a buddy, who had a 230 Dodge in a '50-something Plymouth. I lost to him, more often than not and he never broke. I shook the rods loose on my engines, a couple of times, but luckily never threw one through the block. Sadly, I never could quite get the horsepower I needed to wipe him totally off the map. But he knew I was after him! On the occasions I did beat him, the feeling was absolute elation! Hey I was 17, then, and still learning. I'll tell you one thing; with a set of dual, homemade headers, exhausts, Smitty's and 3 single barrel carbs, there wasn't a sweeter sounding engine anywhere!
