Associated small bore pistons help

[Buggyman]

Hi all, need some help here on this one. I have decided to use a rc10b4.2 for a rear motor class car at our local club. I used to use a rc10b4 years ago and had a great setup which I believe was widely used indoors on carpet at the time. Part of this setup was 30wt oil with piston number 1 in the rear shocks and 35wt oil and piston number 2 in the front shocks on the kit small bore shocks. As the b4.2 generation of this car has big bore shocks on it I want to do my best to get the same damping level I had with the rc10b4. Does anybody know what size hole was used in the small bore associated pistons 1,2,3 so I can replicate this in the big bore shocks. Any help would be appreciated.