b/rb con rod question

Do the b and rb rods interchange easily? seems like they would bolt right in place of one another. All pressed pin,bearing sizes all the same. Only diff is the rb rod is .41 or 2/5 longer than the b rod.

Would swapping rb rods into a stock 400 work? Or would the pistons crash into the valves/head? Just a quick thought on a cheap and dirt compression boost for a 400.