so you have finaly "decided" on the engine? well i believe about the current engnein but i think yourl change ur mind about the 7 port...slowly start adding bits to it and presto....its a big build
The 7 port is my next big build, rather than doing another Mini, I'm going to build an engine so I can replace the Nissan. I've pretty much settled what i want from the 7 port... just not sure where to get it from, and where to get it machined...
But so far the spec is;
7 port head, tweaked by Morspeed (if he'll do it for me)
1380 offset bored block
a proper sorted injection sustem (megasquirt or better)
SC gearing all round (unless I can find a decent helical set)
Grey Clutch kit
cam - still deciding...
aboulsly it may alter slightly, but let me get the Mini finished before I start thinking about the engine lol
For now, its a slightly tweaked 1275

dog change his mind 
Me change my mind... thata'll be a first