Why not just swap the whole head of a SSS Sentra/bluebird. (I think they both use the same version of the sr20de.
Then you get the right sized throttle bodies for the 2.0l, as well the cams and head porting to make the most use of them.
Of course if you have a 1.8l primera I wouldn't bother doing anything to the engine. Just stick with haveing the best looking Primera Iv seen (sorry p-man) and work towards a det swap.
