plug

Can anyone tell me what plug I need to attach to a GM Alternator #25766345 that is normally from a CTS-V 2005 5.7L? I want to wire the alternator and I am having trouble identifying which plug will fit this alternator for a three wire set up.

I cant find any info on how to assemble these. Has anyone done these? Getting the lead through the plug is a major challenge but after this and crimping I am not sure whether the brass plug ends up with a 90deg bend in it and exactly how the white plastic sleeve goes in. These are for the ford...

i have SPF GT40 Mk2 P2116 Roush 427 MSD ignition. Motorcraft/Autolite plugs. lately engine pops intermittenly. at idle, at speed, accelerating, decellarating, not backfiring. not consistent. pressed down on plug wires at plugs and dist. all tight . car runs fine. changed plugs once. log...