pinion swap

i offered my 17t in trade... so i need a much bigger one... i got stock spur in e-revo and running 4 cell a123 cells 80A hw plus 9xl... so with those installed i need like a 25t minimum to even go over 30mph lol.... anyways i need a big 32p pinion OR i need a tiny tiny mod1 spurgear for the revo.. if i can use the nitro ones as direct replacement... 36T mod1 spur i think is smallest from traxxas... thanx for fast reply and offer though
Pete