I haven't had much 1200 experience but I have had lots of 1000 experience Front suspension is transverse leaf yes Disc conversions are plenty but finding someone who has actually done it and remembers how and what was used is the hard part I love my little 1000 coupes Nice and light...handle like a go kart and no strut towers in the way.
Oh yeah.......someone got 1000's in left hand drive....I have the manual on it
Good luck I have been playing with 1000's for 20 yrs and I haven't found anyone that knows anything about them Virtually no-one knows about A series engines. Thats why I've been trying to do everything myself. Feel free to ask questions though........I might be able to help.