I agree, what's inside the Box as long as it's in good health seems to be a moot point. The bump steer is something countless numbers of Hot Rodder's just seem to live with, some cars are worse than others. My personal choice is cross steer and I've learned that a good healthy front spring that is the correct length will eliminate side sway. If your shackles are at 30 degrees and a good spring you can't swing the axle unless the Tires can't turn. Done like this you don't need a panhard bar but change the shackle angle to 45 and it's a different story. Add in a broken down old spring and it's worse yet. Reversed front wheels just keep adding to the problem.