The turbo from a BMW524TD has a .36 A/R and a standard T3 4 bolt flange, but it has a wastegate (the "normal" style with a remote actuator) and a larger than normal outlet flange. As I recall the stock VW T3 has a .36 A/R as well. The BMW turbo has a 45 trim compressor, I don't know what the VW T3 is but its considerably smaller.