You cannot run 6 19s for two reasons. Your lug studs are not long enough to support 2 aluminum wheels and you cannot make the outer 19 hub centric with another aluminum on the inside. We also cannot machine the faces of these wheels to make them work on these studs due to the wheels being thin already.
All of the 19 kits you see run a stock 16" wheel on the inside with a matched tire size.
We do offer the steel inner 19.5s for any vehicle and they run $275 per wheel.