If you follow the project costs as defined in the “E30M60 Daily Instructions” attachment, then you should be within my claimed budget. Most of the estimated prices for factory replacement parts were derived from www.bmaparts.com and www.bavauto.com. Custom swap parts were derived from www.garagistic.com. I used ebay for a lot of random parts like the tranny, E32 electric fan, intake, hoses. Junkyards are a great source for parts. A lot of the fabrication prices are estimated as are the engines and motors.
Again, any information related to costs can be found within each section and the summary can be found in the attachment to the zip file for your convenience.