Upper inner cylinder baffle dimensions needed

[Bruce Fenstermacher]

In the process of rebuilding my engine I've realized my engine didn't have the top inner cylinder baffles. looking at the parts manual they look easy to make and thought I'd have a pattern from a friends 170 but it turns out his are owner produced.

I'm hoping someone will have one of these baffles handy to measure the dimensions for me so I can make sure that the owner produced part from my friends plane is indeed the correct size for the parts I need to make for my plane.

Thanks