Weld in DSE frame connectors were the best thing to happen to my wifes bird convert. Used solid body mounts and solid radiator supports bushings too. Like johnsma said no more sag, (no longer need convert body brace), can jack car from any point and no door bind etc. Ride quality is nice. The DSE bars dont affect ground clearance and are unnoticeable from side view. Where they go thru the rear floor is unnoticeable under stock carpet.
http://www.detroitspeed.com/