He said $2K lifts, not 6K+... The Fabtech rep told us at SEMA last year that front kit would run 5K jobber cost. BUT, find a good shock tuner to set up the valving on those 4" coilovers, and there you go.
The Donahoe springs are progressive dual rate deals and they ride MUCH better than stock. The extra wheel travel makes a ton of difference.
Good luck!