Arouse the DAMPFHAMMER!
At which one do you look for? I am interested as on a side project I am also looking for one. The cheapest I've found is the Infinitude 6 gear set, but the gear set is more a circuit gear ratio then a drag gear ratio. Here in Europe there is also SQS Racing, which is a bit above pricing of the later. But they got good feedback from the racing scene. The MFactory set or even the Quaife dog box set is above my budget. So I am curious if you have some other options at your place.A dog box transmission is part of the plan, it will just have to wait until this one inevitably breaks.