Ah no defo would not agree with that.
6 speed suits them perfect imo.
That idea of putting a longer 5th in them defo ruins them.
what else is need to fit the 6 speed box,
Assuming the rear diff has to be matched.
Its going to be a weekend toy.
How much are type r boxs making compared to a full 6 speed conversion
I think you'd need box, diffs, shafts and hubs. Dave will be able to tell you exactly what's needed. A DCCD 6 speed is probably a different figure area again. Plus then getting it wired for use in a classic.