Hi Rascal77s,
Yes as part of the literature review chapters of my PhD I had to review some neurology of ASD, including the Amygdala as it is extremely important for emotional processing. As for the Amygdala in ASD, research is a bit mixed. Studies looking at children with ASD typically show enlarged amydalas, while studies looking at adults typically show smaller amygdalas compared to neuro-typicals. There is a meta-analysis conducted by Stanfield and colleagues that look at the size of the amygdala across 46 studies and while they found no significant differences in amygdala size between controls and ASD overall, they found a significant effect of age in ASD, where it tends to shrink relative to controls as they age.
Reference below:
Stanfield, A. C., McIntosh, A. M., Spencer, M. D., Philip, R., Gaur, S., & Lawrie, S.
(2008). Towards a neuroanatomy of Autism: A systematic review and meta-analysis of structural magnetic resonance imaging studies. European Psychiatry, 23, 289-299.