The V1 was specifically for the G2 trucks, so G2 braces are required(or modification to a G3 brace). The V2(Rene/Serum had a prototype and provided install instructions/pictures if I remember correctly) was intended for the G2R and Neu 15 series motors, but I only ever made 3 or 4 of them. It wouldn't be too hard to put together a batch of the V1s.