Hi . Thanks for using our new Q&A system .
Regarding your questions about engine conversion on Audi A4 2012 2.0t to 4.2 from s5
yes we can do it , but it is big job . need lot of parts to replace . it not only engine . it is whole drive line and harnesses, need to replace bcm2 computer and gateway.
simplified need another donor car . most staff must be replace . even radiator and all hoses , a/c system.
Thanks a lot for visiting our Web site