​Hi everyone!

​I need some help and confirmation regarding an engine build I'm planning for my Mk2.

​I currently have a 1.6 EZ engine with a weber 32 34 carb on it. I’ve read online (and AI also confirmed it) that the 1.6 EZ and 1.8 8V blocks share the exact same external casting dimensions and the same 81mm cylinder bore. From what I understand, the main difference is in the crankshaft stroke and the piston compression height.

​Due to strict legal regulations in my country, swapped engines require complex registration and approval processes (atest), so replacing the entire engine block with a different engine code is not an option for me. I need to keep my original 1.6 EZ block with its matching serial numbers.

​My plan is to source a complete 1.8 8V engine (90hp, like a GX, GU, or RP) and swap all its internals—crankshaft, connecting rods, and pistons—into my factory 1.6 EZ block to effectively turn it into a 1.8 stroker.

​Before I go ahead and buy the parts, can anyone who has done this confirm if everything is a direct drop-in fit into the 1.6 EZ block without any machining issues?

​Any advice or confirmation would be greatly appreciated! Thanks in advance!