As Rob has said, the driveshaft CV cups can only go back so far before it fouls against the lower control arm mount but you can't keep the engine vertical at this point since the intake manifold will so the whole engine has to be tilted forward slightly (not much).
In my build thread (page 6 -
http://www.ausmini.com/forums/viewtopic.php?t=60133&postdays=0&postorder=asc&start=75) you will see that I have rotated the engine forward around the driveshafts to allow the intake manifold to clear the bulkhead. More info with pics on this is on my blog too
http://mearcat.blogspot.com/2010/10/finding-final-position-for-engine.htmlThere is NO need for modifying the bulkhead for the 4E engines in a Mini.
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-Alan
I blame my dad for my love of minis. I think I was conceived in the back seat of one
I also blame my Dad for me being 6' 1" - not really the optimum height for driving a Mini.