porsche trans, stock VW engine...

[trevorbrady]

I know that the Porsche transmission is too high geared for the stock VW type 1 engines to cool themselves adequately, but how do the lower 4 gears compare to the stock 4 gears of a GT or 1303S gearbox? Would it be worthwhile upgrading the gearbox to Porsche 5 speed with a stock 1600 type 1 engine and restrict yourself to using just the first 4 gears? It would mean that later on when a larger engine was installed the 5th gear would come into use...
Any thoughts?

trev