Increasing a 1600 to an 1800

[spam23]

I have a mark II 1600cl that im considering changing the crankshaft and con rods to increase the capacity to 1800, is this possible and would the cam need to be replaced?

[golfvr6]

Yeah that will work, i know the crank is different but i'm not sure if its the pistons or rods that are longer.
You can leave the 1.6 cam in it, but it would be better to put an 8v gti cam in it