My regal has served me well and still runs strong with 150K miles on the odo. Due to the high mileage and the age, I am thinking of getting a newer W-body as a replacement. The 3.9L V6 engine in post-2006 impala seems pretty good on paper: 240 HP which is the same output of a supercharged 3800 II. I wonder what is your opinion of this engine. Please comment on the reliability, gas mileage, ease to work on et al.
Thanks.