I have had a chance to drive the car a bit with the 3.2. Here are my initial impressions.
1. I think I really got a good motor and tranny. No smoke, no leaks, no weird noises. Runs well, shifts well.
2. I miss the sound of Webers and open exhaust. I'm running the stock muffler with a cat bypass, and holes cut into the stock airbox lid. It's like going from "Led Zeppelin" to "Pat Boone". I know this can be rectified with a muffler change (or delete!).
3. Not as much "grunt" as I expected. This is probably the gearing as much as anything. Not only does the '84 tranny have the 8:31 (vs 7:31 in my '72), first and second gears are also taller than the '72 tranny. This combined with a motor that has a rather high torque peak of 4800 rpm makes for a rather slow start.
4. At 4000 rpm, "all hell breaks loose". It's almost like a turbo car with nominal power up to 4K then it suddenly shoots to to the 6200 rev limiter like a rocket. Not what I expected, but fun. I think a SW chip will be headed my way soon.
5. I have never received a speeding ticket in a Porsche, in close to 25 yrs of ownership. I fear this record will be coming to an end soon. The combination of taller gearing and quietness is causing me to drive much faster than I used to.
6. I think this combination will be a blast at Road America!
Overall, very pleased. It was what I needed.
Roger