19J&200TDI are definately not the same.19J is indirect injection and not intercooled.Many people have had terrible trouble with these and they should be approached with caution unless you are a diesel expert.I love mine and so do a few other enthusiasts.200TDI is more powerful and often more reliable due to a strengthened block and the introduction of intercooling.These engines have a great reputation.Really good examples of either are hard to find now unless you dont mind paying dear.Good luck.