irish1 0 Report post Posted June 16, 2016 Hi, I have been refurbishing my E34 535i and finally got it on the road. Problem is a rumbling from the diff (S3.91) and I need to raise some funds to have this repaired. So I have a recon M30 head which I will be selling so would like to know what the value is? it has cost a fair bit for the work so need to recoup the cost at least. Any interest? Quote Share this post Link to post Share on other sites