I have stock subframe, new standard height body mounts, doesn't appear the floor/tunnel has sag much, Moroso solid mounts (original SS bases), Energy trans mount, Quicktime bellhousing.
The fender to ground measurements are approx 24.25" F and 24.75" R, so it's about 2+" lower via front coils and Global West leafs and 1" blocks.
I massaged the bellhousing area of the firewall a fair amount:
My guess is the cars vary quite a bit in this area of production.
Finished with 3M Rubberized Undercoating:
I also ground the front console mounting bolts flush to the well nuts.
Shimmed the front of the crossmember to lower it at the mount a little:
I'm "hopefully" finishing the install today. Bellhousing is in, just need to re-install the tranny. I'll be taking more pics through the process. My guess is I'll have .25"-.38" clearance from the tunnel to right front inspection cover bolts.
Hope the info helps.