yes, they should know what the a/c clutch is and if you're thinking of doing it yourself, you're going to need a clutch remover/installer. depending on the parts shop they may have them there to rent or borrow though. instructions should come with them though.
1999 A4 Camaro Z28 95K
free mods, air intake, k&n filter, edelbrock headers, slp loudmouth exhaust, 100 shot nx nitrous system, Z06 rims, MT et street drag radials, Eiback lowering springs, BMR Panhard rod, crossdrilled front and rear rotors, graphics, clear corners, "whistler" mod, alpine head unit, 2 alpine amps, 2 kicker 12" subs, other misc. dress up items
best ET of 11.719 @ 119.82 with a 1.62 60'