TD06-17/19 was replaced by td06-20, however they are very similar spec a bit lag then tdo6-20, I will try to find the map for it..
yes, that's a easy one..expect to spool around 3300, full boost 4500 (buster's R33 spool aroung 3000, full boost 4200)...
the internal wastegate is bolt on, same flange..and you need a customise dump pipe..
Mine is TD06-25g, but it's 16cm sqr and I will have it on soon..will let you know..
For the money, take your time, it's yours..:^)