4 speed shifter + linkage + rods

I'm looking to potentially upgrade to a 4speed but it depends how much I have to spend on the linkage, tabs and shifter for it. What do you guys have?

I have a hurst handle I could use, it's one of the slip-in style ones I think. It doesn't have the two bolts I see the other style have on the shifter, so if you have a mech that works with that -even better!

This is what I have:
View attachment 1715166572


Post pics and price please.