This is my 1990 Toyota Celica Alltrac.  These pics were taken at the previous owners house before I bought the car.  

 I haven't had the money to begin building what I want for it but I do have a whole lot of parts for it.  It comes with a 200HP 2.0L 3sgte turbo.  I will be taking the 5sfe motor from the N/A model Celica and using the 2.2L bottom end.  The 3sgte head will be placed on it making it a 5s-gte.  

I was going to build a 5sfte for my FWD before I bought the alltrac.  But to show why I decided to go with the gte head here are a few pics of the two heads to compare.

You can see that the intake ports are almost twice the size on the gte head and the head is a lot wider to make for better valve angles.

It has been done in some MR2's but never in an Alltrac (to my knowledge).  The reason for this is that the 5s bottom end wont fit on the Alltrac transmission without modification.....basically the side of the block needs to be shaved down in one spot.