How to orient rectangular clad blocks to a triangular surface?

How to orient rectangular clad blocks to a triangular surface?
I have rectangle blocks that i have grouped - like wood cladding and i am tring to orient them on to a triangular surface that 2 points are shifted in the cplane - the triangular surface does not sit on u or v or x directions of the cplan. Is there a way to orient the rectangular blocks to the triangular surface without changing their properties?

OrientOnSrf and Splop should do the work.