How to attach pin joint legs to ball joint crotch for a custom?
 

They're Evangelion legs and they'll look great on the custom I'm making with a Marvel Legends body, but I'm not sure the best way to attach. If I dremel into the leg to make ball joint hole, ill also have to cut from the top of the leg so it can fit onto the crotch. I thought about using wire to wrap the ball and slide into the leg hole, then I guess clay around it, but don't know if that's dumb.

Anybody have any pertinent experience? Thanks a ton!