bad cylinder head on a 99 XJ 4.0? built 12-98,

I see alot of misinformation regarding the "99.5" XJ, with claims that late production 1999 models getting the "bad cylinder head". I see some other 99 jeeps may have had the newer "bad" cylinder head" but not XJs.

I assume I have 0630 head which is OK, right?

my build date is 12-98

I just want to make sure I need not worry about a cracking head........

The number is stamped on the top of the head on the manifold side around cylinder 3

The 0331 head is the problem child. So far, no one has proven that a 1999 XJ was built with an 0331 head.

thanks for the input, thats pretty much what I thought. I'll stop worrying.