I'll add a few more options here as well. We have several bolt-on options that you could look into.
Our new StreetGrip kit:
http://www.ridetech.com/store/1970-1...ip-system.html
In this particular kit, the package is put together with a factory style suspension that bolts into the factory locations in the front and rear. On the front, we use a dual rate coil spring, rebound adjustable monotube shocks, delrin bushings, a bigger sway bar (also has delrin lined bushings), and tall ball joints to create a very nice ride quality/handling. On the rear, we have use a set of composite leaf springs. They take away alot of unsprung weight which helps the ride quality tremendously. We pair them up with another set of the HQ series shocks to help control the dampening in the rear. This kit works great on something that you're wanting to turn into a nice driver!
Level 2 coilover kit:
http://www.ridetech.com/store/product-3283.html
Our level two coilover kit is also designed for a 2" dropped stance while staying as bolt-on as possible. We build tubular control arms for the front to work with our Fox monotube coilovers. On the rear, we have a bolt on four link that allows much better movement than the factory leaf setup. Out of the box, the kit is built for more of a streetcar feel but we could always bump up the spring rates for more handling oriented driving. The only thing that needs to be welded on this kit are the tabs (on the rear end housing) for the upper control arms to mount to.
Let me know if you have any questions!