We have S197 rails that we designed about 12 years ago, that we are bringing back to life, that I hope we can release soon.I've used Steeda's Jacking Rails. Easy install, easy jack placement anywhere along the rail, cuts time off of projects/mods.
I'm sure BMRs Jacking Rails are good too. Side note, apparently they don't make rails for the S197. Hmm...
You can jack the front end up using the subframe to body bolts, then place the jack stand at the jacking point, though I'm not 100% on the rear. You could jack up the rear using the pumpkin, which is not advised, but has been done for decades on cars.Lets say you don't want jacking rails. Can you jack the car up further towards the middle from the jacking points so that you can put the jack stands on the jacking points?