3.23,s with a 17 inch tire will drop your gear ratio big time!The 3.23,s were meant for 14,s.That,s a huge drop and would have made her a slug at low RPM,s.Would have done great for H.way!
But those are 275/40/17 that only have a diameter of 25.7". That is about what a 195/75/14 is for diameter.
I have 3.23's but at 70 mph is 3200 with 245/50/15 (24.7" dia). On a road course I'm reaching 5200 rpm. The experianced pro driver that drove my car had 400 rpm over me at least.
This sites are real handy for calc'ing and comparing wheels, rims, and gear ratios:
