[wetback1]

I'd certainly do the thermostat first. Then, depending on your climate, start with a full sheet of cardboard across the rad - if the engine tends to heat too much just fold down or cut off 4 or 6 inches at a time until you find the right balance. This worked well for me on the prairies with both 3 cyl Geos and 4 cyl Dodge Colts.

Now I live on the west coast and after a 2-3 min warmup in the driveway the car is up to full temp within 3 minutes - but I start off to work on a slight grade which makes things work a bit harder.