The highest displacment engine with a manufactured swap kit right now would be the 2.4l K24. It is an extremely expensive swap, however.

Then falls the 2.3l H23A and 2.2l H22A. Still expensive, but a little more reasonable.

The limit of "easy" swaps is pretty much the 2.0l B20B or B20Z.

The largest you can use with your stock transaxle is the 1.6l D16* family.