My father owns a 2001 Sentra SE (performance package) and is looking at options for an engine swap. While the SR20DET is the obvious first choice, we've also been considering trying for a VQ35DE from an Altima 3.5 or Maxima. The idea being that the 3.5 will provide a smoother power band, and more low-end grunt. I know that the 3.5 will certainly be the more expensive and complex of the two options due to its size, but perhaps by moving as much to the trunk as possible we'll be able to find the room. The question is just what sort of mount and chassis mods will be required (including possibly stiffer springs for the added weight) and would a Maxima six speed work better than the stock 5?