When I read this thread I was going to suggest the Qpeng option, but Dave beat me to it.
Regarding the Qpeng, could you send off a 1.4 loom and a 20vT loom and would they be able to put them together? Or would an abf loom have to be used??
1.4 / 2l8v 2l16v...
its all irrelevant
you need a 1.8T loom
dont forget its the 1.8T youre putting in and running not any other engine