going to be installing the v1r4 evo3 rear differential r4evo3 receiver box ,looking at the 2spd assembly also ,looking at the upper deck modifications, from Shimo,s car from the 04 Ifmar Worlds
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the r4 receiver box fits, I will be testing the r4evo3 shocks ,the 2spd also and few other things to see if the old breed and compete with the new don't worry still my r4evo3, im doing because I got hug deal on RRR,s with 3 races seasons of parts and the brand Shimo kit came with the deal and a Fwo5r ,and a fwo5 rtr .