Large Scale Central

Plunger power pickups

I’m trying to re-create track pickup for a used Heisler I just bought. The PO removed the pickups from the trucks. Bachmann no longer has any parts for this. I remember at one point seeing someone had so retro fit plunger/roller/ball bearing pickup. As I recall they were for maybe tenders or cars. But I’m not having any luck searching for them. Looking to find them.