An original Speedster shifter was just a plain VW type with no trigger for reverse lock-out (just a spring-loaded gate for reverse); any wrecking yard with VW's should be able to supply that entire assembly. On the other hand, some of the better aftermarket shifters (with triggers) come from Gene Berg. If you have a shifting problem check the shifter installation first, then the coupler and the shift-shaft bushing; if they seem to be allright then maybe some adjustment is probably in order. Adjustment is usually put the trans (and shifter, if the coupler is not locked down) in reverse then align the coupler pinch bolt with the hole in the hockey stick (shift rod in the trans) and tighten down the bolt and saftey-wire it.