good point.

when I fitted a V8 to my 110, I had to move the engine mount points forward
on the chassis by about 4" - it was originally a 4-cylinder one.  I also had
to lengthen the rear prop by 2" 'cos of fitting the BW type transfer box.

started from standard gearbox mounts and standard front prop (same on the
110 as on the range rover the engine/box came out of) and that determined
what else had to move.  

but it wasn't quite as straightforward as I originally thought.