Everyone's opinion for rear end to go with?

I know this is not one of the two options to choose from but if you have ever changed gears in a 9" floater you might consider it as a option. Find someone local who races circle track and watch him or her change gears. You will be amazed. The only thing easier (too easy) is a quick change and you might even have room for one in your pick up. Not sue if there is added gear noise with a quick change. Never ran one without open headers. That could be a deal breaker. Also I don't know strength wise how a quick change compares to a regular 9" as far as drag racing stress. Quick change gears are less than $100 and fit in your glove box.