dude, there is no 1.8 Type 1 engine. Biggest from factory is 1584cc.
this uses the 85.5mm piston. you can go biggest on this block 94mm.
that will give you 1914cc with a stock stroke engine. There are a few guys in KL running this setup as it is a rather cheap upgrade.
HOWever, there are already a couple of guys running 101mm pistons.
this however is crazy, expensive and it is not feasible to be done here yet, especially we dont have many people with good experience even with 86mm stroker engines.
not many in malaysia are crazy enough to spend ridiculous money just to get 200 hp.