A good method for clutch spring purchases is one user buys say 3 or 4 or 5, and then takes delivery and distributes them at a club meet or something? As shipping is a high proportion of order if buying individually...
I have one of these springs and must say I'm very happy with it!!
It looks lovely in its bag with the full fitting instructions. It's still in its bag because I don't have a f'n car to fit it to!! When I do finally get her back, or her replacement, I will fit it straight away and give a report.
I was mr Kangaroo when I had my car for her whole 38 miles I drove her!!