Not a matter of having to, but wanting to try to get better mileage (if possible
for driving a brick through the air) and to have the car run cleaner and
automatically adjust the air/fuel mixture.

One of the benefits is that I increase the longevity of my new stainless steal
cat. In addition one can use the cat and exhaust from a 1.9 on a federal system.
The benefits:
- O2 sensor port,
- and all parts available in stainless, so only the heater boxes and crossover
pipe will deteriorate.

Plus I guess I have too much time to think of things to do. :-)

--Jeff
82 Westy, South Florida

Sean Garrett wrote:

> You should not have to convert this to be "better" in some respects.
> My recently rebuilt 81 Fed model gets 18 mpg after a complete rebuild and 7k
> miles on her. I took her in at 6k miles for a tune up. It didn't need one (I
> was told). she is still breaking in but I suspect a well maintained (or new)
> air-cooled fed model engine should only need the ignition parts changed at
> ~6-10 k miles. Why go to this bother to switch it around. I think you have
> to switch around the heat exchanges and the exhaust too. Way expensive.