Hi guys, my mate has an old Diamondback Vail Classic he’s wanting some work done to. It needs a new headset for definite and was wondering if anyone has any info on these bikes?

Is it worth putting a bit of cash into it to fix it up or not?

Also, anyone know what headset would fit?

The bike has some Manitou forks but not sure which.

I have a feeling it’s not worth putting any money into it to fix it up… Cheers for any info.