shock springs

[RLGfx]

ok, so i've decided to have a play, and i'm half way through fitting losi shocks to the b4...

anyone have an idea what a rough equivalent would be for blue fronts and silver rears? Obviously I'll end up with a selection, but at the mo I've only got red fronts and green rears, and need to order more so I can test them before the regional next week.

Thanks in advance!

Rob