Good point, Oh Haha, about leaving the front wheels on to prevent crushing the valance.
In fact, I have 4" under the wheels with wedges front and rear.
One issue can be if the floor jack doesn't go down low enough.
Also, I found it easiest to remove the heat exchangers before lowering.
With the HE's removed, I could roll out with about 1/2" clearance after raising the rear bumper to about 32.5"
Anything to avoid the extra work of removing the rear bumper.
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1980 Carrerarized SC with SS 3.2, LSD & Extras. SOLD!
1995 seafoam-green 993 C2, LSD, Sport seats.

Abstract Darwin Ipso Facto: "Life is evolutionary random and has no meaning as evidenced by 7 Billion paranoid talking monkeys with super-inflated egos and matching vanity worshipping illusionary Gods and Saviors ".