When I was in mortuary school, we had to do an indepth study of three non christian groups......their culture, their beliefs and their funeral rites. One of the ones I did was Sikh! I was fortunate enough to make connections with the head of the Canadian Federation of Sikhs and I got a wealth of information from him. What an education it was for me! He was so incredibly helpful and I learned so much. They are a fascinating culture and I know you'd enjoy researching them!