ball joint spacers and coil spring spacers ok for mild lift?

[jks67ss396]

Guys

I have a 71 C10. i would like to lift it just a couple of inches.

If i was able to use a longer spring with a ball joint spacer and spring spacer, i think i could get a couple of inches safely, but Ive read mixed reviews about ball joint spacers.

Anything wrong with using them? like
http://www.airbagit.com/balljoint-sp...-bj-gm7387.htm

Figured i could use a coil spring spacer like mr gasket 1285

thanks guys!