Does Ne1 know of any engine rebuilders that specialize in audi or AAN 20v engine?

Hey everyone i have a AAN 20 valve turbo engine jus sitting in my garage and im lookin for a reputable shop or mechanic that knows the motor and the best place to get watever is wrong with it rebuilt. So far i know that when i bought the motor my buddy said the oil pump seized but the car still started it would just bog out and die so im guessing its the bottom end. So if ne1 has ne links or info of ne1 that knows these motors inside and out and can rebuild them please lemme know thanks. And also im in the GTA(greater toronto area) so somewhere close by to me would be even better lol.

Steve