Is it possible to (or has anyone) retrofit an e46 Schroth Quick Fit Pro
http://www.schrothracing.com/store/T...it-pro/qfp-bmw
http://www.schrothracing.com/imgView...oInstalled.jpg
To fit my e90m3?
Or is there a 4-point belt that fits OE e90m3 Seats (Schroth or not)?