I have raced and towed heavy all of my setups, stock/75mm, 68vvt/75mm, 68vvt/82mm blue truck on stock fuel. 65vvt/75mm, 65vvt/80mm white 05 with built engine and 12mm pump and 30 overs. Hands down best was stock with the 75 or the 65 75 setup. Instant spool and the least egts towing. I was using...