Of if its turbocharged, the engine cover may say 20v Turbo. 20 valves, but its a 1.8L.
Mine: 20th AE GTI, BMP, 123k, stock...for now
His: '01 Jetta TDI, 122k, auto -> manual swap
The project: '84 Jetta GL TD, Giles IP, 2.5" downpipe and exhaust, full rebuild done winter 2010/2011