hey matt, talk to shane or chris at
http://www.acvw.net for spindles and parts. they will be able to help you.
some things to keep in mind are....
-you need to determine if you need balljoint or linkpin spindles for drum or disc brakes
-you need to build your spindles, so you will need a kingpin carrier (one off your stock spindles works), and you'll want a new king pin & bushing rebuild kit, a new link pin & bushing rebuild kit and at least one set of caster shims (again, go to acvw.net for that stuff)
-you'll need to do some reading on how spindles are built. it is straightforward and not to difficult, but the more you know the easier it is. search thesamba.com forums or these forums for info
-drop spindles are great. i run them on my car and it's nice to get the nose down a bit and by using them you still maintain your stock steering geometry (aslong as your toe & caster are properly set and your link pin shims are installed correctly)

good luck. B)