blu,
putting down good times on a smooth track is not the same as overall ride quality on REAL roads.
Sorry, a BASE V6 Mustang with IRS is far better overall than the best mopar suspension updated from the 60's that has had a gazillion dollars thrown at it to improve it. That's pretty much a fact.
So if we really want to compare apples to apples on a track, V8 pony to V8 pony...then it's game over. That's proven as well. And yeah, I wish that was not the case, but it is.