So much depends on what you plan on doing with the car when you build it. Based on what you posted, I would say it is a must.
2016 BMW M2 - ED Pick Up on 07/12/2016; US Pick Up on 09/22/2016
2012 BMW 535I - ED Pick Up on 12/03/2011; US Pick Up on 01/27/1012
2001 Boxster S 29,000 Miles, Original Owner
2007 Mini Cooper S - Sold
1997 Porsche 993 Turbo – Sold
1997 Porsche 993 Cab - Sold