I have this freshly rebuilt engine and was dropping it into my 67 when I realized that the bolt pattern is different than that of the trans. What is going on? Do I have a 400 LB paper weight? I didn't realize there was different 289's running around. If I cannot use this block, since it has been rebuilt, will any of the internals go into my other 289? If so then I will machine my other block and move all the parts over And use it in my convertible.