[Brian]

ANY valve in block engine, relieved or not, can be called a flathead, an L head or a sidevalve, all terms relate to the valve in block design.

Some FORD flathead 100 HP blocks were relieved, some weren't. Nothing definitive....
Canadian C69A blocks, as well as SOME other Canadian 85 and 100 HP blocks, used a double drilled throw crankshaft and lock in shell bearings in the rods. The American engines ran exclusively full floaters until the 8BA came out, when they went to lock in 'shell bearings'. The 8BA style of rod bearings/rods, differs from the original lock in bearings/rods used in Canadian pre 8BA assemblies.
As the original Canadian lock in bearings are now next to impossible to find, simply use the regular full floaters. They will directly fit.