for the 240 m90
http://forums.turbobricks.com/showthread.php?t=18442
if doing a 5cyl or 6 cyl swap you need to use a M90 from a 6cyl whiteblock engine, also the 5cyl swap will need a shortened 6cyl sump to fit, not sure about engine mounts they bolt into the 700/900 using inline 6 engine mounts but not 240.
i guy is putting a 170hp NA 2.5 20v into a 240 using such. some pics can be seen
http://medlem.spray.se/adturbo/photoalbum1.html