Its kind of annoying having dual 1400W Gold class PSU in the server but no PCIe power connectors from the PSUs.
So there is breakout-boards that can solve this so I can use existing PSUs?
My server is Supermicro 2042-6RF.
From the quick look I did, I don't think you have PSU's that can use breakout boards. The Liteon's in the Dells and the HP ones are readily available on Ebay. From what I saw of the connectors, technically I guess you could MacGyver something by soldering leads to the pins of the PSU but you would still have to buy cabling.
Picking up an HP1200w PSU and breakout board with cables is normally ~100 or so on ebay.