ESR vs Neil no comparison! Go with Neil you will not be disappointed!!!!!!!!!!!I dont know if this matters or not but the cylynder is brand new from esr with the trx9 port job. I am currently running a trx5 exhaust and somewhere during the rebuild i have decided to go with a sand dune screamer. I am wanting to swap over to the trx11 centermount, 41.5mm carb with arm wrenching portwork. I have heard you are one of the best, do you think your port work would be a better investment than sending it back to esr and having it ported to the trx11, can you squeeze out more then esr can? I want this thing scary fast, a little bit on the unrideable side, can this be done with a 330 stroked 3mm.