Ok,
This is the math that I've done. On a 25.5" tire, my fender lip is 28" (from the ground, of course) and the lowest parts under my car (cats and mufflers) have 5" of clearance. To find out the distance from the ground to the center of the wheel (hereafter referred to as the hub) I divide 25.5" by 2 and I get 12.75". That plus 2.5" (28"-25.5"=2.5") gives me 15.25" from the hub to the lip.
When I put the 2" drop spindles up front, that shortens the 15.25" to 13.25". I intend to mount a <24" tire on the front of the car, so that means I'll have 12" from ground-hub. 12"+13.25"=25.25" will be the new distance from the ground to the lip. Subtract 25.25" from 28" (the original lip height) and you get 2.75 of drop. Subtract that figure from the original 5" clearance (under the car) and I maintain 2.25" of ground clearance. Now, if I get o/r X pipe and slim profile muffs, then I might gain back .5" of ground clearance to bring my total to 2.75 inches. That's tight, but I think it'd still be streetable, wouldn't it? On top of the tire, I've got 1.25" from top-of-tire to fender lip. I'm going w/ a 195/45R17 on a 6" wide wheel (up front) so my treadwith is just 7". This should give me good clearance inside the fender, eh? Out back I'm doing 275s on a 17x10 wheel, so clearance for >2" of drop should be fine there, too.
I have to get this low since I'm going wingless/skirtless! <2" drop looks like @$$ w/o skirts (IMO).
Again, my main question is:
Does anyone know what shocks would survive this severe a drop in the rear? Any suggestions?