TrackCar & F30 330d
he got 428s. Should have had 421s IMO, but there you go
your alternator bracket is bolted to the wrong side of that part of the block, that's why it looks to be too far over
I did a little bit more research and Burp put the Tentioner bracket on the other side which would put it even more over to the left. Bit looks like its actually ok
(pic of the Burpspeed Race car)