sorry, not sure about keepin the emissions stuff but that shouldn't affect how much the carb flows....and also I was a little off with my cfms, it's quoted to be able to flow around 360, not 380.........

I read a article in the 4WD Toyota Owner magazine about carb tuning, seems you can do some pretty impressive things with that aisan carb. I've also heard from talkin to a guy at a toyota shop down here in Phoenix called ToyoWest, that in his opinion the aisan is the best unit you can use for the 22R as long as you set it up right.

To be fair the carb would be nowhere near stock by the time your done....you can modify it to accept holley main jets,get a better primary booster, reshape the venturi and some other tricks. But then again your webber is about as far from stock as you can get and for those of us who need to pass a visual emissions test, somethin like this is a great alternative!

Oh, BTW here's the site of the company that was interviewed in the article: Braswell Carburetion Check 'em out!