yeah, a L28 120y would powerslide easy
just need no dash and alot of spare sheet metal and the engine would slide in

then use the sunny control arms and steering arms, cut the spring mount off the the 240k struts, weld the 120y ones on
then you have 240k struts in the 120y

then use the rear springs out of the 280c (hope they are the small size) and use them as front springs in the 240k struts

your just being lazy the effort is definatly worth it, if i had all that stuff i would be doing it, except it would be going into my ute rather than a 120y

EDIT: just check the size of the rear springs in both those cars, you might get lucky