they are rare for sure!
i looked for a good 2 months but didn't find anything decent so i bought an r33 4 door instead!
original manual 4 door's GTT's are very rare, most of the manuals you will find have had a conversion.
to get a conversion done with an r34 box would be like $3-4k i'd imagine, you could probably do it a little cheaper by using an r33 box.