Could a fabia vRS 6 speed gear box be fitted to a 1.9 TDI 105bhp in a new fabia 3?

Can not see why not

If you find out how to do it let me know, would be interested. It's a big shame they didnt put a 6 speed in to begin with. long gear ratios with the short diesel power band is not good

I would also be interested in this to keep the revs down on the motorway.

The other question is what gear stick to marry it up to afterwards; one that shows the 6th gear. Would one from an Octavia suit? If so, where to get one from?