Adding crowbar items in gmod server?

Soo yea as u guy know there is a gamemode called deathrun in gmod…
i own a server my self and i would like to add some other crowbar items like Diamond sword a and a normal sword that you can hold while u playing like you can buy it in the Pointshop 2 that i have how do i do that to make it like you can buy it that you hold a diamond sword instead a crowbar that one is so overated please hlep

I’m not too familiar with Pointshop 2, but if it’s anything like Pointshop 1, you’ll have to create an ITEM hook out of this:

From there, target the weapon and change the model.