If it's just for street driving I'd go for the original "rubber" bushings for the very reasons Mike brings up. No sense in doing the "boy racer" thing, and sacrificing ride quality, unless it's your design theme.

As for "Show Quality" and "street driven" those are incompatible in the same car if you really mean either description. If you drive it on the street, more than up and down your neighborhood block, it won't be a show winner at the top of the class. You'll be competing against trailered cars that have absolutely NO sign of usage, anywhere on the car. Whether that makes sense or not doesn't matter, it's reality. If by "show quality" you mean "extemely nice, and detailed, street driven", then that's a realistic objective. But forget the show trophies from serious competition. You'll have a great chance of winning at cruise ins, and top only, cursory judging, and such where the judging sophistication is much lower. As an example, at the Alki Show two years ago, a car with fair to good paint and a lumpy body took "Best of Show" . Probably because it was candy red and a convertible. Or maybe the guy had pictures of the judges participating in an orgy with a goat. Several other cars there were of much higher quality, but, probably some kind of politics involved, they were passed over. That's just the way it is.