Ill tell you its been rebuilt some time between these two picks...
First is the vacuum pump and then the switch to a ProSystems carb,probably calibrated for the auto. Now heres were you can tell its been at least torn into,the heads are differant you can see by the way there cast around the bolt boss and front mount area.Also,notice the balancer...in the top pic,it looks like a Fluidamper,were as the other is an ATI I beleive.
Also the carb spacer may be just a little taller.