I ran into a fellow..(friend of a friend) who runs 4.500 cranks in a pulling tractor.he has a engine maintenance program that is really decent.he pulls the engines[3] and cks them all out,and finds cracks in cranks,and all cranks are Bryant,or similar quality...he is selling them cheap,and claim many friends and his son run these in cars for street/strip with great results,no failures. he is running full tilt blown aluminum engines,so stress is high for him. I thought about trying one for my junk. he also says he had to grind little if any on a std 440 block...???... they have mopar pins for rods too....so whats your thoughts???? worth the risk? they are 4500.00 cranks for 200.00 or less....he has 15 or so avalible....thoughts???? thanks ,mike