http://www.dailysportscar.com/2016/0...gines-drs.html
Reading between all the lines it almost sounds like DPi would be the most sensible option to replace P1 privateer/light if IMSA is willing to open up the chassis constructor limit. That way privateers and manufacturers can compete at LM, WEC and IMSA if they choose to. And not bother the P1 hybrids for the overall wins at both LM and WEC and don't compete directly with the P2s as well.