There is different internals on the st200 engine aswell
as the throttle body ,induction system etc etc

the water pumps are shite and replace with a metel impellor one as original is plastic and can break internally

they are a common failure engine also ,bad for letting bearings go with oil surges , they dont like hard cornering left iirc and hard revs in second

nice lookin cars tho ,mate used to have one of the saloon limited numbers (only 300 made) he had 299 ,