I just got a tops 4.0. I love the knife but what I really love are the clips so the sheath will go horizontal. I have several knife sheaths I’d like to do this to. Anyone know where to get clips like that?

Are you referring to the soft-loops?  I'm not sure what the length is, but they're meant for horizontal carry:  https://www.armatuscarry.com/store/p27/Mil-Spec_Pull-The-Dot_Soft_Loop.html

I'm sure if you contact them and you need them a little longer, they would accommodate.  A while back I had sourced longer lengths of the soft-loop material and the Pull-Dot snap assemblies to make a several...just feel off the hobby list, but I have a half-dozen or so knives with these loops, and they're pretty solid.

ROCK6