Finally got it working! Now the real fun begins 🤩😃 (Turns out the PERC S300 doesn't like anything but Windows, so had to fix that with a H700 off of ebay) :
Dell PERC S300 PCI Express x8 SAS RAID Controller DP:/N: U558P | eBay
Dell U558P | Perc S300 Controller - Serverworlds
Dell Y159P PERC S300 RAID Controller Card SAS 6/IR
Dell PowerEdge R510 3Gb/s PERC S300 PCI-e x8 SAS RAID Controller Card U558P | eBay