The shops at Pennisular should have Grover tuners. Check with Maestro or Davis.
Also, in the event that Grover tuners are unavailable, bring one of your guitar's tuners down... so you can get another brand and compare to ensure it will fit your guitar.
For the pots and jacks, I'm not sure abt CTS but there are Dimarzio parts available from Swee Lee or All Music, Gotoh parts are available from Davis.