I have a 2010 jk stock islander except : Banks exhaust system, k&n cold air, and rugged ridge wheels. I'm wanting to run 35's but the kits I've looked at like BDS AND ZONE seem to need drive shaft modification for the front if taken off road.

 

With a jk front drive shafts are needed if you go 3"+ over stock. This is because the diameter if the front drive shaft is so large it comes in contact with the tranny cross member at full droop on the drivers side and the metal band which retains the expansion boot on the drive shaft comes in contact with the tranny pan on autos and tears it off ruining the boot which is non serviceable. If you don't disconnect the front sway bar while offroading, the chances of this happening are slim.

You can lift the jeep without adding a front shaft. You just can't wheel hard with the stock shaft long before it fails.