Or, as has been said a few times in this thread, just get the 4G63-to-R154 adaptor. $400 for the bellhousing, etc. I think there are some other custom bellhousings made by the same guy for T56, W58, other. Last I checked, they were all for the narrow-block 4G63's found in the Eclipse, Talon, some Might Max all the way up to like '99.