There are at least one thing that I would like to point out. The
MCS has the added strength of a forged crankshaft and connecting rods along with special high strength pistons.
It just sounds like you are starting with one foot already in a hole if you start with a
MC instead of a
MCS.
I'll agree with the others that say to start with an
MCS and take off the supercharger if you really do not want it.
Just as you can choose to not use the boost from a turbocharger you do not need to use all of what the supercharger has to offer. By learning control of your right foot you can dial in as much preformance as you wish, or as much fuel savings.
Just how much do you think that you will be able to get a 2007 engine for? It won't be $6,000!!! Even if you were able to find a wrecked one it is going to be more than that. Then, of course, you will have to wait for someone to wreck their new car. I can hear the conversation now, "Hey, I hear that you just wrecked your new MINI. Did you damage the engine or tranny? Can I buy it? I'll give you $500 and I'll take it away for you."
If you are lucky you might be able to beat the solicitor that is chasing the ambulance.