So how would it be done? I know you'd need to grind a bit of the block on the Silvertop as the starter fouls on the edge, and on the Blacktop the sump has pickup points for the gearbox itself. Then I am assuming that you'd need to make a custom bracket up to enable the use of the equal length driveshafts on the silvertop block?

Failing that I'd love to be able to fit the 6 speeder into my Mk1 - but using the same bolt holes/front starter as a BC box as then I can mount it on a bearer and not have to faff with custom mounts.

Possible to weld a BC bellhousing to a 6 speeder?