Was speaking to Mark this morning Flanno and he says the new button and head WILL retro fit the Mg66..Apart from maybe being a gram or two lighter though not sure why you'd want to bother.I did press him to get them made in black though with the MG logo..then I'd be interested..watch this space for that..

he also said the crank would fit too but probably giving a little more bottom end snap at the expense of a bit of top end.I don't think my Mg66 needs any more bottom end ,and certainly not at the expense of the never ending top end