Safe, low cost and 2" drop. I think you can pick 2 out of the three.

For a 1" drop, turn down the T bars and get the rear springs re-worked by a local spring shop. Cutting down the bump stops would be helpful. A stiffer set of front bars would be nice to prevent bottoming but may not be strictly necessary. Cost <$1,000 even with new T bars.

For 2" I really think you would need drop spindles and maybe flipped rear springs. I personally would worry about exhaust and oil pan bottoming with a 2" drop.