Good advice on jacking points below, good luck with the search.

http://www.gomog.com/allmorgan/jackpoints2.html

I don't think you need to jack the car up for the chassis number they are normally in front of the car seats on the cross member as you say.

Could it have been re chassied do you think ?

2009 4/4 Sport Henrietta
1999 Indigo Blue +8
2009 4/4 Sport Green prev
1993 Con Green +8 prev