How do I get the lift I need without shackles?

I dont get it , 002-003 springs wil bolt right on a 66-67 belvedere/satelite body , just moves the wheel 2'' forward , rear shackles can be a problem .
OK, I must have missed where you were bolting these on a 66/67 B body. I’ve never owned one or worked on one. Sorry to hinder. I’m out.