Well...we have surely covered this and beaten it to death.

Any other actual ramps that will work and can be store or internet purchased?

I can tell you I've had a K3500 Diesel Chevy pickup on my plastic ramps, and even though the load on them was nearly 3x my bonneville, they never creaked or groaned.

Those plastic ramps ain't exactly lightweight. Most of them have massive internal webbing, and they aren't going to rust, unlike metal ramps and stands. And I've seen metal ramps fail because of bad welds, twice!
Personally, I do use jackstands, but only because I haven't bought ramps yet. No place to store them.

Of course, we could skip the whole debate and just backhoe a big trench in the driveway.

Rhino ramps black are rated at 8000 lbs and grey are rated at 12000 lbs.

I feel VERY safe under mine.

http://www.blitzusa.com/automotive/ramps.html

Bill, the key question is...will the Rinos work for the Park Ave with the low spoiler ?

If you measure the ground to spoiler and spoiler to tire distance..I can measure the ramps to see if you'll clear.

ok I will let you know, Bill !

They will work.

which will work ? The plastic ones from Advanced Auto Rinos ?

Yup, that'* what he'* saying.