I replaced the rear springs on my 90 ht with the heavier duty ones from the station wagon. The rears a bit harsher going over speed bumps, but I think the handling's improved, definately less lean in the corners. As for ride height, there is a slight raise, about an inch probably. In the end worth it I think.
Adsey
ffs its raised slightly because his old springs were shagged. it wont raise it any more by using h/d over standard
Yella,
YOU ARE A ****!!!