Cor430vette

Hmmm, maybe I don't understand, but I don't believe that from a suspension standpoint there was any pieces and parts from the Z51 associated with the suspension F55 option. The F55 option is simply the magnetic ride (shocks). The standard suspension on a Grand Sport was the Z16 suspension package which had the bits and pieces as you mentioned, needed to make that suspension but it is not an option it is standard. In 2011 the F55 option could be included with the standard Z16 suspension. My 2012 has the F55 listed as an option but the Z16 is not an option and the Z16 it is what includes the Z06 stabilizer bars and the Z51 springs.
Here is a link:
https://www.corvetteforum.com/forums...age-specs.html

AmmoVet

OK. I know of one type of mod where that switch may have been used to stop the Nav from locking out changes while driving. You might try that. Switch it one way or the other and have a passenger, important, a passenger try to update a nav way point or enter an address. It may time out if not done in quick time just move the switch on and off again to continue. Try it you might like it.