Have a driveline 421 hp, 36mm pwk's with pods, sip exhaust, tops out at 74 horse power on the dyne with 45 torque. Pipes are allowing max power at 7400 rpm and these cylinders need to pull further into the rpm. Ive looked at sniper, shearer and cpi as my top 3. Everything that i have read has put shearer pulling further than cpi and sniper being better all around but can't find any results showing snipers on a set up similar to mine. Im not worried about waiting 12 weeks for the snipers but really would like input on them first. Cpi shows to have a smoother pull but fall short with shearer pulling harder up top with the longer pull. Im building this motor for fast, open trails and drag play. This isn't going to be a full drag bike and don't want something thats just all balls to the wall or nothing.