Apparently the rumbling noise started a bit after new o2 sensor / exhaust / cat was put in. I have a feeling it's exhaust related..
I've decided to go for this one if they take my offer.. later down the road if I want more power I can sell it and grab a 6 (I'm getting it 6 hours away from where I live..) and could easily pick up a couple more thousand for it here after grill repair.
I think I'll be happy with a 4 once I get it.
More pics:
http://img162.imageshack.us/img162/7...2008004nu6.jpg
http://img259.imageshack.us/img259/5...2008003xm2.jpg