Well done! First get a dating letter from the club if you want to get the Y10 UK registered then you can send that to the DVLA for a UK registration, contact Neil Priestman : dvla@lanciamc.co.uk, to arrange an inspection. Without that club letter you may not be able to register the car in the UK.
You may not need a MPH speedo, my Fulvia doesn't have one, for the headlamps you may be able to adjust them so not dazzle oncoming traffic for the MOT.