Good luck.
I have e36 imported in 2006 by us 316i face lift model now we are planing to covert it into m3 or 2.8 with auto gear.
I looked in uk whole package of 328 with gear breakers diff was 500 pounds excluding carriage n customs in Pakistan .
If your arrangement is working nice might be interested to do same in my car.
Fj40(84), ae101(95),e36 (1998 face lift).