I have some real short bottle jacks. They sit on the ramps and lift from the normal jacking points. I bought them at a liquidator in Portland and can't find more anywhere. They are only 3" high compressed. If I adjust the screw tight against the jack puck they have enough lift to get the tires off the ramp. They also fit under the control arms. If you got the jack plate a normal jack will fit under the cross member.
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1998 Black C5 Coupe
2008 JSB C6 Vert
2003 Chevy 2500HD diesel Arrival Blue
I use the crossmember between the wheels. I put a 6 inch by 1 1/4 inch board between the jack/jack stands and the crossmember to distribute the weight. I actually have a low profile hydraulic scissors jack that slides between the ramps of my 4 post lift that I use to lift the car from the conventional side rail points and then put jack stands under the crossmember to support one end of the car while I move the jack to the other end to get all 4 wheels off the ground at once.
__________________ 2009 CRM 6sp manual Coupe with Z51 Suspension, Nav, and Corsa Touring Exhaust
Member of the NCM and Corvette Marque Club of Seattle.
Bondurant Graduate from April 2005.