They'll fit the head, but the mounting holes for the throttle cable thingy aren't there, and the plug cover needs to be the GZE one too, as the GE one is a different size
It's a lot of effort to go to to refurb some N/A ones. N/A cam covers are a dime a dozen. Why not buy a cheap set of N/A ones and refurb them then just straight swap without the need to change leads and all...