I'm not sure I want permanent sub frame connectors. weighing out options is all. I fully understand weld -ins are better. Just looking at every option here. Crackedback has a ton of experience in this sort of thing.
I'm sure Crackedback knows his stuff. Please don't attempt to get me into an arguing match with somebody who's not here.
If your weld in frame connectors become a problem at some time Sawzall and grinder.