[Alain]

I have the quick jacks as well. I have the 7000 EXT model, the car is stable even when not using the lift point closest to the front wheels. No wrinkles on my car either from lifting it with the quick jack from the middle lift point and the rear one.

If you are worried about it, get yourself one of those magnetic lift pads on Amazon, you can stick that thing (almost anywhere) you'd like on the pinch welds to allow you to move the quick jacks forward and use the lift point closest to the front wheels.

I've done that as well.

[Warrior102]

I also have the standard length 5000SX Quickjack and it doesn't wrinkle sheet metal and the car is rock solid on the lift using the rear most lift point. The weight distribution is nearly 50/50 on these cars, the engine is not an anchor. The bent sheet metal is from shops not using the pinch welds or using the lift pads on the rockers.
I went as far as purchasing the EXT add on rail that I've never used and probably never will. Got mine at Home Depot of all places on promotion for $1000, money well spent.
Enough with the internet lore, if you don't know what you're talking about don't.

[ZX-10R]

I've used a regular floor jack for years (including the SS) and never had a problem, the sixth gen chassis is very rigid