The transmission ratio data I have <got it from Joel> shows the same
 ring and pinion ration for both the 4 spd. and 5 spd. used with the 
 diesel. However, the  ratio for fifth is 0.77:1 compared to .85:1 for top
 gear in the 4 spd. This will result in an overall final drive about 
 10% higher with the 5 speed transaxle. Incidentally, first gear is the 
 same <3.78:1> in both gearboxes. I believe it's only the Syncro that has
 the "stump-puller" low gear.

 Dave Kautz
> 
> 
> 
>  >I'm planing to convert my 82 diesel to a TDI. Anybody out there done
> anything
>  >similar? I've got a source for the new engine. I'm thinking I'll have to
> swap
>  >the tranny also to take advantage of the new power. I've got a line on a 5
>  >speed, from an '84, but i understand that,  that trans has about the same
>  >final drive as the 4 speed. You just get a granny first gear ( plus
>  >lockup???). Any experienced tranny folks out there? I seem to be on a
> mission
>  >to do this. 
> Thanks,
> Bob Bellanca
>