You won't get a lot of info on the 14/11, sadly. However, any turbo shop that has experience with IHI turbos will be able to make one for you. You need the VJ14 (which you have off your donor) and the compressor wheel and compressor housing from a VJ11. These can be found on Ford Probe GTs, Mazda 626s, etc, or I'm sure someone here could find you one (that's how I got mine, and for very cheap!). All it is is giving your VJ14 and the two parts from the VJ11 to your turbo guy, then have him replace the VJ14 bits with the ones you gave him while doing the rebuild.
Oh, but most importantly, have the shop port out the wastegate hole on the VJ14 so that the wastegate flap just seals around it. The stock hole is way too small and causes boost spike issues.