I remember when the Hookers first came out, It was around 1776.............. LOL, More like 1476! That said, everyone was screaming get a 9/15...... They were running the old DASA cast cylinders, stroked motors........ I called Dave told him my spec. 84mm Big Bore 61X. His response "10/16". He was spot on. I later in life tried a 9/15, It bored holes in the water. Later had one pitched to 9.5/15.5, I had dropped back to an 82mm ported 61X. The 10/16 worked just fine with it, just tried to tweak it a bit with the custom pitch. If you have bone stock cylinders and pipe, 9/15. Any other mods, 10/16
