Thanks very much for the advice so far (it has given me some good insight into how I might go about doing this)! I only really have two more big questions on this subject that I cannot find answers for online:
1) In the photos I posted above, both dhols clearly have some sort of "retaining ring" to help hold the head onto the drum.. Is this something that can be purchased? And if not, does anyone have a clue as to what sorts of materials these might be made from, or how to go about trying to make one?
(In the event that the ring could not be procured, is it actually possible to mount a bare plastic head on the end of the drum with nothing but ropes and not have it break the first time you try to tune it up?)
2) Can anyone give me any sort of info. on recommended head models (or at least head thicknesses) to try on the dagga side? (I assume it should be thicker than what you would put on the tilli side)
***If I can collect enough info. on the subject, I will photo document each step in the process of changing out the heads, and make a tutorial to be posted online. As of yet, there is no reliable source of information regarding this issue. So I'm asking everyone to PLEASE reply with ANY pertinent information that can are able to provide!***