Headset Help required

I’ve a Felt DD fat bike – it comes with an FSA head set which i’d like to swap out for either a Chris King (ideally) or Hope in mango/orange…

I’ve removed the FAS unit and measured the head set – 44mm inset upper (simple), but it had a 55.95 external cup lower!!!

Hope, Chris King, Cane Creek etc.etc. all say a 55.95 lower should be an inset cup, but this would drop the headtube by 8mm and steepen the head angle – I’m I doing something wrong – do hope / Chris King do such a lower?

And yes I have checked and double checked my measurements (with digital callipers)…..

You can install a sweet Angleset: http://www.canecreek.com/products/headsets/angleset

i could, but its almost twice my budget, I don’t want to change the angles and its not orange….

i think i’ll have to go with a works components headset – if i go with a hope or Chris King i’ll steepen the headtube by 0.5degrees – at least with the Works it’ll slacken by 0.5 even if its in dull black……..