I've looked long but am still foggy, sorry, I assume that when installing the R200 in a 240 you need to install the mustache bar as it is in the 280, that is with the bar coming off the backside of the bushing mounts and running behind the suspension uprights, as in the the top picture NOT the R180 mounting which is bottom pic? So I get to take the whole rear end out (or at least a healthy chunk of it)
I found this guy and was able to put the top plate, top half of bushing onto the bolt (stuck with grease to hold it up there) and push the bushing's tube back down a ways, then I could sneak the bar on without taking other pieces off, well I did undo the sway bar, I should be able to reassemble the bushings with the bar in place