ok so i would like to make duel rate shocks for my slash. im not going to bother spend the money on the prolines when after either buying just there spring assortment or modifying some other springs i can accomplish the same thing. the only thing better about the proline shock is that it has a 3.5mm shaft instead of a 3mm shaft. and a threaded body for people who dont like the preload spacers. i just need someone to measure something for me so i know if the proline springs will fit or if i need to look elsewhere.

what is the inside diameter of there springs?