Hi, I'm a newbie to the BMW scene so please be gentle. I have converted the rear of my e30 BMW to the wider track z3 rear arms, I'm having a nightmare finding Driveshafts to fit. I've ordered new off ebay for a 2.8 z3 but they keep sending the shorter shaft. Is there a more common part number or shaft from another model that is easier to obtain? My diff is the stock smaller diff.

Any help greatly appreciated.