I had a valve guide fail in my mk4 r32. The quote to replace all the guides and machine the valve seats is $650. For $615 I can buy a used cylinder head from a audi TT 3.2L. The issue is the cylinder head is from a 2008-2009 TT. The cylinder head part numbers for the mk4 r32 and mk1 TT match, but the mk2 (2006+) TT cylinder head has a different part number. Does anyone know what the differences are? Can I put a mk2 TT 3.2L head on my mk4 R32 bottom end? The mk2 TT cylinder head I'm looking at is fully built. Also, as a side note, I do have a tune on my ecu. It's the gonzo stage 2+.