Dumb lift question

If I put a AAL in the rear that adds 2" to the rear height will I have to replace the factory shock?

Also has anyone had any issues with driveline angles or alignment angles on the Fatbob's 5 lug lift Kit?

Fatbob's kit for a 5lug:
http://store.fatbobsgarage.com/toyota-tacoma-2wd-5-lug-suspension-lift-kit--2005-2009-p7611.aspx

 

Thanks alot Chris. I was told the factory shocks are not long enough but in the videos for the SST lift for the 5 lug the original shock was reinstalled.

Any ideas of alignment or driveline angle issues?
I think the added height would affect the driveline angle and either it would vibrate or it would wear out the U-joints prematurely.