Does anyone have any spare shock absorbers they are willing to sell me?They have to be for a Sierra rear axle,though obviously I can modify them.Looking for a good pair,such as Spax,Koni or Avos.
Alternatively if anyone spots some complete ones on ebay please tell me.

Don't know if they still have any, but Randall Motorsport had some absolute bargains at the Autosport show, brand new but shop soiled and old stock Leda shocks (exceedingly good, and normally £200 each!) going for £50 a piece.

Randall Motorsport

I don't have any to sell, but just asking for shocks to fit a sierra rear axle probably isn't going yield many results. Some idea of the application may be usefull, presumably you are using the entire sierra rear beam in a Robin Hood or Tiger Cat etc?

The most vital bits of information you need to specifiy are:

Uncompressed length
Stroke (or compressed length)
Spring rate
Fittings e.g. rose joints, metalastic bush etc.