If this link works, you can get the complete instructions from their website:
But to answer your question, it could've been done on Saturday...
I just elected to start on Sunday afternoon (I know, crazy).
Simple hand tools should get you through.
1957 Austin-Healey 100/6 Wine Red
1961 McCulloch R1 go-kart Screaming Yellow
1995///M3 Coupe Dakar Yello Eurosport Twinscrew S/C
1999///M Rdstr Cosmos Black Eurosport Twinscrew S/C
2001///M Rdstr Steel Gray
2011 X5 35i Sport Deep Sea Blue/Cinnamon