It might only be me here thinking this but what makes our vee any different from other engines??........naff all!!! The only difference is the fact its subjected to a little more heat than other engines. Last year I managed to fit a BMW K1200RS motorbike cylinder head to a 1950's BMC designed engine block. Bare in mind that this was pretty much a bespoke motor and was running over 290bhp per liter at full boost (was a 1460cc), I could have found a fair few places to set the cam timing and fiddle with the mapping. First thing in this case was to find a similar base map using similar cams and timing, second was to up the fueling....by alot! then tweak and "tune" the motor until perfect. At 290bhp a liter and a cost well into 5 figures it had to be perfect! Due to the siamesed port lay out (two cylinders relying on one port) it was actually harder to map a standard 5 port mini as opposed to a 300+bhp one but it has been done very succesfully.
If I was to go out tomorrow, buy a spare v6 block, add H beam rods and forged pistons, ported and polished heads, a different inlet manifold etc I'm pretty damn sure i wouldn't have an issue getting it runnng right. Every weekend there's probably hundreds if not thousands of kit car owners with all different types of weired and wonderfull engines running perfectly....why do people have such an issue with ours??
Yeah thats a mini engine believe it or not and there certainly isnt a big market for ones like that...