Just googling to see what's out there aside from what we would default - Cobra. For those have looked into this or have replaced it with the longer spline driveshaft, lemme hear it

I found another site that is less....unsure about quality, balance, etc.....
https://vanos-bmw.com/

Found another site, Similar pricepoint as Cobra and or he will just sell you the spline and you cut/weld