Just as a bit of an update:
The following companies do specific conversions for this:
http://www.remmele-motorsport.com/en...cooled_en.html (this may be made by a company called Bug At 5 Speed)
http://www.laperformance.co.uk/suspension.htm
http://www.eagleperformance.com/CoilOverKits.html
and Jaycee in the states also do a replacement outer torsion bar cover with a bronze bush which might be up to the task.
However IMO the mixture of low price and simplicity of design from Eagle Performance won it for me, and they were very helpful, so I shipped a pair over to the UK a couple of weeks ago. I've now had them zinc plated and they're ready to fit, once my coilovers arrive.
Regarding choice of coilovers I'm going to be running a pair on the back that are 15" extended length and 10" compressed and initially I'll be using 200lbs springs. These may be a bit on the soft side, but if they are I'm hoping I'll be able to adjust that out using the adjustable coilovers. For more details of suitable length shocks the SSP(
http://www.streetstylepower.co.uk/publicRouter.cfm) catalogue is very good.
On the front (1303 remember) I'm currently running a pair of late standard struts modified for adjustable height spring cups and 2.25" springs, and 100lbs springs which with no adjustment are giving me the drop I want, and an okay ride. I'm running Gaz damping adjustable inserts, which had their max length reduced by 5cm at Gaz. These came from Rally Design (
http://www.rallydesign.co.uk/catalog/default.php).
Hope this is of interest.
Andy