How long should your front droplinks be?

I've just got a pair of replacement ones from twos-r-us after the aftermarket jobbies that came on the car mysteriously snapped.

The ones from twos-r-us are 10 inches between centers, but the ones that are on the car are 8 inches.

Which is right?

The suspension appears to be bog standard

(Bilstein

- not lowered), so is it supposed to be 10 inches

- and is that why the old ones broke?

I don't want to fit the new ones until I'm sure they're right, but at the same time I'm not very happy driving round with my ARB held up with a cable tie.

Cheers.

Edit:-

Sorry

- it's a MK 2 Rev 2

(to save you having to look it up)