I'd be more than happy to make a template for you. Just a thought, have you tried to transfer the dash to paper, as much as you can, then cut the right side out, lay it over to the left side and trace in what you are missing? Kind of a mirror image thing.
The way I've done mine dash so far is to take the old dash, lay it on the new piece of wood, then drill through the old dash screw mounting holes, then use wood screws to hold it steady while I trace around it. I then left the two together while I cut the rough outside shape on a 8" band saw, this takes some creative movements since I'm using such a small band saw. Once the outside was cut, I removed the old dash and used a small bench top drill press with an adjustable hole saw to cut out all the round holes, the tach, speedo and small gauges. To cut out the ash tray, vent openings and glove box, I used a held held jig saw with a fine tooth blade and one that will cut a small radius. Be careful around the glove box opening so you can use that piece for the door. Then to the router table to cut the counter bores for the small gauges and bevel the outside edges of the dash. With the counter bores done, I changed router bits to bevel the outside edges, this being the final process to having a completely cut out dash, I picked it up about half way around to admire my handy work and creative genius, then when I put it back down to finish the outside routing, I didn't notice that some of the bevelled angles are the opposite way. CRAP!!!! Well I did say I could get three dashes out of that one pice of wood. So now I'm on TR4A dash take two. Sorry to get so long winded or is it long fingered???
Thanks for welcoming me to the group, hope I can be helpful, if not, maybe entertaining.