hey you asked about putting a auto od behind your /6 , well in the 60's dodge put /6's and loadflte auto's together . using an adapter and crank spacer , loadflite has the la smb v8 bellhousing pattern and this adapter bolts to the /6 and lets you bolt a la smb v8 auto trans to it . so the newer o/d trans thats behind an la 318 , 360 , 5.2 , 5.9 will bolt right on that adapter . just must add @ inch to you trans mounting from the stock location . and your starter just bolts to the trans in a v8 placement .