Don't understand what you mean by crash bolts, but they are just a normal macpherson strut aren't they (they also fit a ke20 corolla afaik.. same steering bolt pattern). So there should just be 2 bolts holding the strut to the steering knuckle (forgive me if thats the wrong word for it). And then 3 bolts on the strut top.
Undo brake line, push down LCA, remove the whole strut from the car. Compress the springs, take off the stut top, undo the gland nut, remove strut insert? You should be able to leave the disc and caliper on through all this, unless the 1200 has some unusually spastic design compared to similar vintage toyotas..
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