I started using this Excel file with my '95 M3 to plan and track upgrade expenses. I thought the rest of you might get some use out of it, so feel free to download the ZIP. You can insert rows in a section to add more lines if needed, and just type anything in the Cpt? column to mark it as completed and subtract from the section remaining and overall project cost remaining. Feel free to ask me any questions about working with the file. There is a hidden column "H" that does some of the interim calculations.