I have never done this swap but I considered it in the past. Quadratec sells a kit that includes a bellhousing and throwout bearing set up. It looks like the throwout bearing and clutch fork set up are different, so I do not think that it is a direct replacement. Check with www.man-trans.com
, they offer a kit to replace the Peugot trans with either a 3550 or AX-15, they could probably confirm this for you.