I have a standard size set of bushed connecting rods with 2.125 small end diameter. I'm considering a forged 4.125 stroke crank with 2.00 small end. Can the bushing be removed & "resized" down to 2.00? Or should I just buy chevy rods?
The bushing is in the small end. I am not sure where you got the bushing is on the big end, but that's what you wrote.
I'll save you a lot of headaches, don't use a 4.125" stroke crank. 4.00" stroke is more than enough for 99.9% builds, and you can buy and use off the shelf parts.
I get 4-5 guys a year that want to build a 426" small block because they saw one in a magazine article.
Remember, Magazines and Hot Rod shows are designed to sell parts, not longevity.