Hello all, great site. I have a 79 sport. It had a bad head so I ordered a new Non-jet valve head from autopartswarehouse.com. good price, but different from the Jet-valve head I, m wanting to replace. The new head has an extra cam journal in the rear and a smaller hole in the front by the cam pulley. Should I use this head if I can pick up a valve cover that will fit, or are the cams different on non-jet vs. Jet valve heads. Thanks for any help.