Need shocks?

[BITURBOAMG]

My 05 h2 has 45k miles and have been running some 37's since new. I have never had any rubbing issues until the last month or so. I now rub when I turn into my drive and seem to hear rubbing when I hit dips in the road at speed etc. Is this a sign that I need new shocks? Any help would be great. Also any info from guys who have upgraded to the 08 h2 give me some feed back. Other then the extra power and great int is the 08 any better then the 05? My h2 has a magna and a few other goodies so I have some good power, just wondering if the new h2 is any better?