found this new happy days intro it 2nd season but 3rd season theme song must be off the 2nd season dvd here it is



http://www.youtube.com/watch?v=3GUqwng8lBQ

Yep, that's where it's from.

cool looks bit longer though i like it

The video is actually the correct length. They had to loop a part of the audio, though, to make it match the length of the original video.

they did good job with it good knowing its on dvd and not handmade like others i see did they fix it think i heard they did

I'm not sure what you mean by "did they fix it."