I am restoring a 1934 Ford 5-Window I bought in 1965 ch***is is done except for rear shock arms. I've been told 33's will work on the 34; 33's are 40-18052-A and 34's are 40-18052-B.
Those look like front arms, I could be wrong, but I think the rear arms are the same for both years. You might try posting this on the Message Board, you'll get a lot more views.....