mongrelEB is correct, I too have done the conversion twice and not needed a different drive shaft. My EA went from 4spd > 5spd > 3spd and I used exactly the same shaft.
Whether you do it yourself or get someone to do it, my biggest recommendation is DO NOT get a 2nd hand box unless you know the history of it/test drive it. Both conversions I have done used 2nd hand boxes and both blew up with in 3 months. It may be more initial outlay of money to get a reco box, but trust me.....it'll save you a lot in the long run!!!
1992 AXII Telstar TX5 Ghia
121kW 2.5L DOHC V6 in a car that weighs 1100kg's and looks like a 4 banger from the outside......SLEEPER!
1988 EA S Pak 3spd CFI.....Soon to be a 250rwkw HSV eating machine.
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