I created a little Excel spreadsheet to help calculate Vehicle Stats for WOIN. I thought others might find it useful as well.
Edit: Updated the spreadsheet. Altered the look of the sheet to be clearer and, I think, easier to read and understand. I've included some instructions for the process, added dropdowns for purchasing Tuning Improvements, and dropdowns for selecting Upgrades. There's also a Vehicle Sheet that can easily be copy/pasted into a word processing app for printing.
Edit, the second: Another update to the Vehicle Conversion Calculator. Tuning bonuses are now automatically applied to appropriate stats. Upgrades list based on location (Front, General, Rear).