Limp v Erect (handbrake)

Hi Guys

I have a 1964 SWB 2A with a low handbrake
(See http://clivees.googlepages.com/HPIM0938.JPG)
and although its a original design I find that the Limp (Low slung) handbrake a real pain to use.

So my questions are:
1. Is it acceptable to swap for the later Erect S3 version?
2. Is it possible to swap?
3. Do you know what I will need to do this.
4. Are there any major gotchers?

Regards
Clivees

If the coat fits wear it. Series 11A were only built from 1969 to 1971 Lights in mudguards. I remember doing one in the early seventies, Because of a worn ratchet. Complete hand brake new was under a tenner. Cant remember having any problems fitting. Can remember how much better it looked and worked well until I sold the vehicle----------BB