im in to middle of my swap and have ran into some hurdles with the ae111 6-speed tranny. there is various info around regarding this but no pictures. so here is what need to be done.
heres the difference between the old c52 mount plate and the c160 bolt pattern. notice the c160 plate bolt holes does not even line up.
!!!!IMPORTANT YOU READ THIS PART!!!!!
as far as which clutch fork to use i 1st started out with the 200mm clutch setup and fork (c52 hardware). due to act's cheap release bearing design it would not sit right and sometimes allow the fork to beome slanted thus causing the slave cylinder to push at a slant. this cause the clutch to not engage properly or should i say release fully. instead what i found worked was to just use the fork that came with the c160 do not do anything here.
the proper release bearing that will work here is a release bearing for a 7afe
if your planning on modifying the old c52 plate you'll want to grind down the section on the shift fork that is by the bolt to the bottom. this will be in the way of the welded nut on the c52 plate. grind down then ridge on the red section.
while your doing the clutch anyway it might be a smart idea to take the tranny and mount it in so you can find what you need to modify.
the c160 fits in perfect and there is no need to cut anything frame wise.
you'll also have to swap out the clucth slave because the 6-speed one is a couple inches to short.
here's how the mounting plate will look like after you modify it. ugly....
simply put huge washers and tons of lock tight....
also this is kinda a hack job but you will need to modify the shifter base so that you can go into reverse.
you can choose to modify the plate or take some carbard and do some cut outs so a weld fab shop can custom make you one.
more to come.
i reedited this page as of dec 24 2009. due to the format changing on cardomain. which is where all these pics are hosted. i did not realize that the old pics did not work. i just moved some stuff around.
this is the finished product. 
as far as the shifting goes your stock shift linkages work, but to clear reverse you'll need to modify the shifter base. firstly the base is of 2 parts a casted (heavy) pieace where the shifter bolts to and the bottom of that where it bolts to the car. take the top half of and grind under it at an angle. this part is trial and error because i really can't tell you how much to grind of. you'll have to keep grinding and refitting untill it clears or is right. next the mounting base is the cut one little section where the passenger side linkage sites. when you test mount the shifter you'll notice if you go left to try and get into R the passenger side cable will hit the mount plate. this is because it is now traveling a farther distance that what it was orignially designed for. the last step is to cut a hole on the passenger side for the sifter to clear such as in this picture.
just a hole be mindful to to cut it out. also everthing in these speps are exsagerated even more for a TRD short shifter. more grinding bigger hole. reason why i know is because i mod it to work for the stock shifter. then i had to mod it even more when my TRD shifter came in.
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