I realize this is an older post, but wondering if the OP is still here......how did the 11.5 shocks work out? I'd like to do the same to mine.
lowering that low will cause the tire to hit the fender were it clears the upper shock cross frame support bar when hitting bumps.
I hit it with a 205/65-16 tire and with the OEM I/S shocks set on too low of a setting.