I was planning to use 255/60/15 Mickeys (27"), but going with the 235s may be a way to keep the stock 3.23 gearing. I'm currently running BFG street 245/60/15 tires (Radial T/As).
I bit the bullet today with the Razor Alky kit. I'm also collecting the necessary side items (adjustable fuel regulator, direct wire kit for the fuel pump, valve springs). I also have a 3" DP being ceramic coated, and have on hand a Lorenz boost controller. I won't install the alcohol injection until the winter - this will give me time to scrape up some $$$ for the posi upgrade in the stock rear end.
Sounds like fun!