I've tried the alum steering rack and it's no better than stock.crank the stock unit fully tight run the vision Ackerman your as good as it gets. Use tiny washer under the right side steering rack to keep up down movement out. Use 2.0 eight buggy steering links and steel balls. tekno cvd kit is mandatory for smooth full-lock steering the whole front end feels like money. I've just grinded the carriers and hubs with a dremel and side of front diff case and the front of a arms so wheels turn to within couple hundredths of touching the back side of hubs at full lock
I've had the 1.0 and bce setups work great like this but with the 2.0 it always Feels like more left steering than needed and not enough right with a constant push entering higher speed hard rights. I must be missing something.
I've tried some odd asymmetrical things to correct it. this track has a lot of high open rights and just a few hair pin left's.