the 240K struts will fit onto the stanza lower control arm (the 240K lower control arm is much longer than the Stanza - probably too long to use in a 1200. I will measure them later). They haver the larger spring seat, which will need to be removed and replaced with Stanza/1200 spring seat (or 60mm coils and adjustable platforms ). The 1200 strut tops fit. I will be able to tell you more about any possible camber change and any difficulties with brake lines or caliper clearance when I have a closer look at the struts. You may need a larger master cylinder to cope with the twin spot caliper as well (I assume you are talking about the twin spot sumitomo 240K brakes). The 240K strut is much shorter than the Stanza strut, which is a good thing - means more suspension travel is available which is important when lowering.

The strut length is the biggest drawback of the Stanza strut conversion - it will limit your suspension travel on a lowered car. The Stanza strut has the longest body of any of the struts I have (see earlier post)

the 200B Girlock caliper is identical to the Stanza Girlock caliper. I use the larger Commodore pads in these with some very minor grinding of the pad backing plates. Lots of good pads available for Commodores

I'm trying to sort out which struts I'll use next year as brakes are the 'weak link' on my car at the moment