Hi Bill. Welcome to the EV Discussion List! Converting a car can be as big or as small a project as you like. I've been driving and converting EVs since the 1970's, and been on the EVDL a long time. I've seen everything from $1000 conversions with cheap surplus parts, to $100k conversions that rival factory fit and finish and have race car performance.
Since your BMW is a '91 and this is your first conversion, I would suggest keeping it simple. Look for the book "Build your own electric vehicle" by Bob Brant. It does a great job explaining the ins and outs of 1990's conversions. There are 2nd and 3rd editions of this book by a different author, Seth Leitman. He added a lot of new material to bring the theory and parts availability into the current century. However, it is weaker on the actual techniques for using these newer parts and materials. "Convert It!" by Mike Brown and Shari Prange is another great book on classic car conversions. It too has been edited and expanded into the current century by another author, Ron Toms. Finding someone local to help that has done it before is important! Books, emails, and videos can only go so far. They can save you from a lot of mistakes and expense. Happy hacking! Lee Hart -- Excellence does not require perfection. -- Henry James -- Lee A. Hart https://www.sunrise-ev.com _______________________________________________ Address messages to ev@lists.evdl.org No other addresses in TO and CC fields HELP: http://www.evdl.org/help/