HAHA, thats my exhaust your seeing that looks like the control arm (SIG PIC).
Its the Hotchkis which come with new bumpstops:
http://www.socaldakota.com/performance_mopar_dakotadurangoram_suspension_hotchkis.html
It lowers NON R/T's 2/3 and R/T's 1/2.5.
And yes I have 20's w/ a moderate size sidewall.
But I agree for some strange reason, my R/T seems lower (in the front) than it should be. white99dak's dakota in theory should be 1" lower in the front than mine (spintech srings) but side bye side, mine looked lower.
I like my ride height in the front, but like I said, wish I could get the rear lower and still be able to do what I need to (the hotchkiss rear leafs are adjustable, but I'm too lazy)