It could be possible yes....
I am willing to make you a template, pre drilled out of Plexiglas, not too dis-similar from this....
but yes, I am going to charge you for it, because you will be getting more than just a block.
it would give you the ability to make about 5 to 10 blocks, (with my blessing) before the template will be too warn out to be accurate any more...
I can and will also include the pre-drill and post drill bits. ( 2 of each)