Yes.....cooling system can only be assured for no more than 80-100k miles. Many do the overhail well before that. Expansion tank, tstat failure, WP failure and temp sensor o-ring are all places of concern.
All vanos units have inferior o-rings installed on vanos pistons, when they are built and can become brittle in as little as 20k miles. Replacing these is a must and is a very easy diy. If the zhp does not have standard vanos rattle, then it most likely will not develpoe one.