As they say, you can either Raise the Bridge or Lower the River to get more clearance.
1) The Black Hole Cosmic Chaos was a raised cabinet side project (added triangular sides on top of cabinet)
2) The Reverse Flush backwards pinball was a lower the playfield (and reverse tilt) project.

Neither are easy but the raise the cabinet sides project was easier relatively speaking. It changes the length of the playfield glass due to the longer hypotenuse of the angle, although you could use standard glass if you make a new rear glass channel that is deeper. I found that the existing metal side rails covered up the new seam formed by adding the triangular side risers.
You might also need to raise the backbox riser.

Lowering the playfield is more difficult because of relocating both inner side rail supports perfectly, and more importantly the bottom of the playfield interfering with other things in the bottom of the cabinet. But since mine was an EM game so there was a lot more in the cabinet bottom than on a SS game. I had to move some relay racks to stop interference with the score motor.

Alan

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