How can I insert a part that attaches to a player's Torso?

[Dev_Peashie]

Im just more used to use WeldConstraint than normal Welds, I like them, I dont have any specific reason, I just think those are more flexible.

You could read more about the differences by searching:

Are there any differences between WeldConstraints and Weld?

What are the difference between Welds and WeldConstraints? Are there differences? What are pros and cons to this?

Depends on your project, take the desition fits your needs