I bought an `85 380SL for Mrs Porsche. She never drove it. I drove it and loved the look but:
-you'll need a hoist to remove the hard top without help (110 pounds)
-the car felt
great on the highway for cruising because it it feels like it weighs 3 tons
-the 380 is way under-powered for the weight of the car so acceleration is slow
-handling is
not nimble
-I didn't like the transmission at all
-pray you don't have to replace the valve cover gaskets (ask me how I know)
-no power top means minutes of hassle to bring up of the soft top if it starts to rain.
-you don't want to have to buy interior pieces: cost of parts makes Porsche seem like a budget car.
-runs on 92 octane and no ethanol due to old gaskits and hoses
-expect 15 mpg at best
Find a 450SL and get the power you need to move that sled (and have the double row timing chain)