I'm new to the forum and with the current build I have going on in my garage I may need informative help. I have a 2006 Mini Cooper S with a blown motor that I purchased for a great price. This may seem like a dumb question but i cant seem to find this one out by searching on the internet but is there a difference between the crankshaft in a R50 and a R53 car? If so please tell me what the difference is? Thanks in advance!