Hi Chaps

I can get hold of a steel crankshaft and steel rods for a 1800cc CVH engine, they are brand new and very cheap to me!

Will the crank and rods fit straight into a 1600cc CVH engine block as I have a newly reconditioned one of these complete with new 1600cc pistons as a spare. Will I need to modify the cylinder head in anyway?

Will the new capacity of the engine be more than 1600cc, if so will it now be an 1800cc engine? Will my new 1600cc pistons fit straight onto the 1800cc rods?

If anyone can help with some advice?

Thanks
Bob