you will find that if you buy a JZX81 chaser front cut the 1JZ swap will be just as easy as the 7M-GTE swap as everything from the JZX81 will bolt in and both conversions are similar in terms of wiring hassles...
there is heaps of info on this site, celicamads site, southo and a few others, u just need to be persistant with the search function.