These just in from Mike at DDM (Great service BTW!)
Add a pair of these I've had sitting around in my Den for a few years:
And I should have something like this, less the AUDI and + the 370!
More as I work through the install! On the Audi I was able to adapt the stock sliders but this proved impossible on the 370. The Bride mounts and sliders look to be low enough to work and adaptation to the Sparcos Should be pretty painless..