Where is a good Indian grocery store on Oahu? I'm looking for spices.

I love Indian food and have been trying to make dishes at home. I usually find what I need bouncing between different grocery stores, but it would be nice to know of a one stop shop. Specifically, I would like to make some lamb saag and the few recipes I see call for amchur and/or kasuri methi. I'm in Wahiawa if anyone knows something close, but I'm willing to drive wherever. Thanks!