Be alert to the oil pan bolt lengths on the 150. The bolt for the right
front corner position needs to be a bit shorter than the others so that it
will not jam against the lower timing cover bolt.
Check out: http://www.jag-lovers.org/v.htm?1235701528
Enlarge the second picture if you need, and are able.
In reply to a message from Gene McGough sent Thu 26 Feb 2009:
Hi Gene,
I’m a lurker on this list as my Jag is a much later model - though
it still has an XK engine.
That shorter pan bolt in the right front corner is common to all XK
engines from the very earliest to the very last.