If you look at the pictures you can tell its obviously a 16valve engine.
the 1.6 8 valve only produces 75ishbhp, and is exactly the same as the 1.4 engine; and them pictures look nothink like that, it is obviously not 8V.
later on they braught out the 16v version, which by the pics you can clearly see this is, it produced around 100 bhp. however there are not many of these cars around, i have only ever seen one for sale, im not sure if its the same that went into the mk4, but it wont be far off it.