Thanks very much Beerhead, answered all of my questions.
I can tell you that the 20valve box uses equal length drive shafts, so I will need custom ones made up according to the drive shaft place I went to. I'm thinking I will just use my existing box with the new engine, it should hold up ok?
Just another question, will the bigport flywheel bolt up to the 20valve engine? Or would I be better off using the larger diameter flywheel?
Also, is it the AE92 clutch from the 4age engine thet needs to be used? I am assuming they changed the flywheel diameter to the larger one in this model?
Thanks again for you help.
Jarrad