that is really funny Don. chances are Don already knew about it and already has the engine in his shop ... or on the way
there is a huge difference between the US b34 and the euro b34. main difference is compression. the number is the easy way to tell the difference. other than the b34 or b35, there are ways to tell the m90 described in the forum - found by search. if i remember, one of the ways are the water jackets on the side of the block.
other engines not discussed are m88 / s38 - totally different animals.