what you talkin bout willis.arent the later engines 6 cyl?
530 5 series are sixes even now,some markets had a 3.5 v8 and the 4.4 v8 in the e39,the e60 530 is a six and the 545 is the v8,now 5.0 ....dont think there is anything between 530 and 550 now (not counting the diesels )