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Changing my satria 1.5 auto to 4G93/4G93P (NA) manual.

People has done this conversion before? Btw, how much did it cost you and what is ur opinion about this upgrade? If there are MIVEC heads reading this, can i get ur opinon or the 4G92 MIVEC manual? I heard that the 4G93/4G93P (NA) is cheaper than the 4G92 MIVEC. So in the price difference, is it cheaper to change to 4G93 and upgrade it to MIVEC than to buy a 4G92 MIVEC? Which is more powerfull and smoother? In terms of value for money...