Is anyone running the new ESR cylinders....I'm looking into upgrading sometime this year....got a buddy running the old pro x ESR 370+5mm stroker crank...and quad straight rips.....and was wondering if there new cylinders are any good vs the pro x....I was out at the dunes last week with my completely stock 86R and getting smoked....well nobodys really running stock setups anymore...I'm thinking 350 with 4mm stroker setup........any info would be appreciated.... JG..:lol: