I would say find one that has an insulated cockpit if you are after aircon as they are toasty beasties the heat is welcome in the deeps of winter but on warm days the transmission tunnel and side pipes make for a warm car, the aircon would be handy to deal with cabin heat but inneficient if the car is adding to the heat.
Peter J Dyna-matted his S2 Roadster to good effect, not gotten around to it on mine but I will one day.
I have neighbours and I do shift work so no noise generators on my cars, the standard box are noisy enough when you unleash the V6 Banshie howl...............
