Well, I have looked in the shed, and there is good and bad news, crank cases, pistons, heads, cranks, ignitions, con-rods for the MKII, no worries, the one thing i can't unearth is the Cylinder, apart from one that i fear is worse.
I will get everything i have to you asap, and as soon as i can get my hands on a good S70 MKII Cylinder, It's yours!
(Naturally, this gives you first priority to any S70 MKII Engines we find on our trip, if i cant get you one first)
Also, as for the dud engine, feel free to keep it if you like, and salvage what you can (I remember it having a good spark!)