Ola, long time since ive been on here!

I used to have a 03 tdi a3 140 with around 107k on the clock.

I remember reading that all/if not most BKD TDI heads were prone to cracking and casuing a coolant leak and then possibly hydrolocking.

My old one, never had any coolant issues, but im planning to buy a A3 tdi 03 plate again.
with around 90k on.
No signs of coolant leaking and drive fines.

How many people as owners faced this issue?

If i was to face a engine change, is it basically engine out, engine in? No immobiliser issues ? or needing to recode something silly?

------Question 2:

CV Joint- are they like changing any other cv boot? Fairly easy but messy?

Rear Axle Bush, are these easy to replace?- quick run through?

I was going to buy a 2007/2008 plate but this has came up at a reasonable price....