something is weird about the MY & L Series brakes. Others have managed - seen pics! but the L stuff that I compared to MY fronts...not gonna work for me. With that stuff you have I would be shoving the L hub - just the 30 splined bit with wheel studs, separated from the L disc and slap it on the MY axle and see if the caliper and stuff lines up.
Difference between L hub and MY is the 30 spline inside for starters. MY spline goes right through, L spline stops about 8mm from the inside. L and MY CV axle spline and bearing surface dimensions have corresponding differences where the L's bearing mount surface is longer, seats inside the non splined bit of the L hub. You will likely get away with the L hub bolted to MY front disc coz they do, tried that much

Also suspect my 84 MY sedan had an L hub one side, MY the other, MY calipers and discs both sides.
Calipers use different mounting bolt centres and L Series caliper swing bolts are supersized.
I might be a bit anal if going this path and wanna use L CV on MY shaft just to get the spline/no spline thing matching correctly if the stuff all bolts up right the rest of the way.
Check the offset of those rims to avoid disappointment too Sam
Oh yeah, good idea on making a new boot - will try a few more fail attempts first to get the L Series NVH quality first

or see if can still get the biggerXD Falcon boots, trip to the wreckers maybe
