273 dilemma

I put a cast 318 crank in my 273 that I just built. I never planned on running any stock year converters with the little nose, nor a stock 120 tooth flywheel. 318 crank was a 72 year model, drilled for and has a pilot bushing and went 10-10. I used Scat rods which were better rods and cheaper than reworking the old 273 rods. Had it balanced with the custom 30 over flat tops and it's all good. It went to 6 grand on the dyno a dozen times, but I wasn't worried about it anyway. Cast cranks get an undeserved bad name for mild street motors. I had a 73 Challenger when I was a kid, with a cast crank 340 in it. I made that poor thing suffer, and the crank never was a problem.