Dear 32;
There are 2 types of valve covers for the 235. One uses the rocker studs to attach & the other uses 4-1/4" casp screws. That one is the 'later' (55-62) version etc.
Now Patrick's sells a Wayne finned aluminum one that's nice. Also; the guy in Penta Luma has all the McGurk patterns & might could make one of those up.
There are chrome ones too which are the stock type, just plated.
Good luck, John M........