it's the same clutch as the cosworth so no issues there

as for stripping the box, the front came off, i undid one bolt that holds the revere gear on the front casing, front comes off, big circlip and enough play to slide the front input shaft out and job done

looks like you've gone the whole hog and undone the big bolt in the back as well to remove it all, but it's been several years since i did mine so i may have forgotten how to change the selector stuff with it's little 10mm bolts but other than that i can't remember it taking longer than about 30 minutes apart and together again