suggestions

Has just over 160,000 miles and I want it to last a lot longer. I was just wondering what I need to replace. I'm going to try to do as much of it as I can I just need some insight to what I need to do.

I'm thinking of improving the performence of my 1998 Buick LeSabre custom and im wondering which would be better to use a supercharger or a turbocharger?

I am about to purchase a 2002 RDZ CXL. Any thoughts and suggestions? Also, I am going to replace the headlight assembly. I was told that I could use the 2004 assembly which is clear instead of amber (I like that look better), is that true? Thanks!