yes it will physically go.. Will it directly plug in? nope... will you have to splice/solder? yep... Will it require custom fab of a mount, surround & trim, you 'betcha..
Sorry my friend, you knew the answer before you posted the question.
If you have been a member since 2006, then you know better than to post a thread like this on NASIOC.... c'mon man....
This is like asking if a 4G63 Evo engine will fit in a Bugeye... sure it will... what are you willing to do to make it happen... An extreme example but the same applies... its all about WHY you want the '08 cluster & then how much $$ & time you are willing to put into it.
I know you will get a pissy reply, that's cool, but the reality is everyone will want to know "why bother"?