its a fairly easy swap.a few little things to watch out for
need to use the pasangers side engine mount from the 3tgt,as it has clearance for the turbo oil return pipe
have to run high pressure fuel pump and surge tank (assuming you had carbed 3t)
ive done a 3tgt swap in to a Ta23 celica so ask away if you have any questions
might pay to check toymods.net as there are a few 3tgt swaps detailed on there.