Finally pulled my bone stock 85 GT out of storage and the rear carb bowl sprung a leak on first start, ended up with a small barbecue. Luckily no paint or wiring damage, but the rats nest of emissions tubing at the back of the motor roasted. Rather than replumb all of that crap I'm ditching the 4180 emissions carb in favor of something more normal, either a Holley street avenger or a 4160. I'm also considering replacing the factory intake while I'm at it to squeeze a little more out of the setup. This is a street car that is mainly used for my wife to take to cruise ins, so driveablity is key. Has anyone out there used one of the dual plane manifolds like the Edlebrock Performer or Weiand Street Warrior in place of the factory unit and gotten worth while performance improvements? I've got other hot rods to play with so no need to get too radical on this one. Yet.