[jyl]

Reading about some experiences with California emissions testing makes me wonder - when it's time for my '89 3.2L to be rebuilt, will I be able to get away with doing a 3.4/3.5 twin-plug, if I keep the Motronic and stock HEs/cat/muffler?

I've always assumed the testers wouldn't detect the displacement change, and that if appropriately chipped the car would run clean enough to pass the tailpipe test, but of course you can't hide the extra distributor . . . would that alone fail the visual?

I spent an hour searching the CARB site but couldn't find anything saying how the ignition system was regulated.

If worst came to worst, could you replace the double distributor with the stock single, just to get through the test?