I have an a999 and 318 in my car. Currently swapping in a performer intake, 4 barrel M2008 carb, and 1/2" AED wood spacer for heat soak protection. Lokar says they make a kickdown cable for the a904, but not a999. I thought the a999 was the same on the outside? Does it have a different outer case, or different kickdown lever shape than the a904?