2006 Impala LS

I just got a 2006 Impala Ls with a 3.5 just wondering if this is a good engine

I'd have to say that it is a good engine. I've seen chevy 3.5 and 3.8 liter engines with over 200,000 miles on them. I have a 2006 chevy impala LT3 that has the 3.9 Liter V6 in it, and it seems to be a well built engine so far.