Maybe not the right place to ask, but the question is as above.

Will a St170 Head bolt on the old 105ps zetec bottom?

Thinking about the old 1.8 16v 105 unit. And will it make any effect?

Its going to run ITB and a another ECU that can run the VVT. And i know im going to fix some alternative solution to the belt tensioner.

reason for this is my countries laws, Im going to drop a 2.0 in the car, but if i can keep the original 1.8 block, i wont have to pay extra tax.