Im not sure, from what I just seen online it was basically swap the lot it the drp box , when I ordered my injectors I was speaking to the guy at rushworth performance and he was asking what I’m doing and said to do the forks and 4th support as a minimum which I was planning to do anyway but also maybe change the gear set for tdi, from what I seen would give low rpm at 70-80mph in 6th for motorway driving