Actually, there wasn't much "sent" except for the ToT and the armor modules;
- The tanks' main armament [IMI MG253] along with KE projectiles had production lines set up at MKE's facilities where they then got produced.
- The tanks' Fire Control Systems & Electrical Gun and Turret Drive Systems were produced at Aselsan's facilities.
- The assembly of the upgrade package itself took place at 2nd Main Maintenance Center Command facilities.
Basically, IMI sold the recipe for all the above along with the delivery of ready-for-assemble armor modules.
Ammm... No, Knight fire control system from Elbit Systems.