I realized that you are giving an alternative to paying for higher octane fuel. Let's boil that down. It's not $5 a gallon. You can do it with just adding the racing fuel at a three to one ratio. 1/4 racing fuel. Super unleaded is $3 a gal. and racing 110 is less than $5 here. Not a big difference anymore. So you can run a stock 400 at less then $4 a gallon. So you can do all the work that Cliff and company speak of and save yourself $1 a gallon. IMO Since I already have vehicles that I use for most everything else but cruising that will burn the crappy $3 fuel then it's not that big a deal to pay $1 more a gallon when I'm driving just for pleasure. What's that work out too, ah...., about a nickel a grin!