Thanks guys, Chris the main thing with the inserts is to get a large surface area, big enough so that the load to pull it through the CF is larger than the bolt strength (circumpherence of insert x thickness of CFRP x CFRP shear strength) . The biggest challenge i have is alignment, on a normal professional build all the holes would be machined on a big multi axis machine at the end, but since i don't have that luxury i used 3d printed frames to hold the pre-drilled inserts in place during the layup stage. post #64 shows some photos. The pockets in the tub surface for the wishbones also help mechanically lock the frames more or less in place too. This whole thing is not super accurate so there is a level of adjustment with oversized holes in the wishbone brackets too.