my shaft is too long. take a look at it
You have the same problem I do, Bill.
About the oil filter issue though, you're probably better off using the long-style anyway. It's too bad you can't get one of the original type red, white and blue Mopar filters for a Slant:
http://www.pentastarparts.com.au/store/index.php?l=product_detail&p=5869
I think that Mopar Performance filter is a repainted Purolator. I use the standard Purolatator because it's white like the OEM mopar filter.