I've used several 413-3 truck blocks in my racing days in my 1963 M.W Plymouth Belevere in NHRA stock class after breaking a rod and ruining the original 426 M.W. block
I did have them sonic tested and maganflux first, one of them may have ended u p being bore to 4.280 to start with, maybe not CRS I would have the crankshafts offset ground to increase the stroke .013
I'm not sure if the 413 blocks in the early 300 where special or not like the marine, industrial and truck blocks where later
I bought a 1957 300 C hardtop in in 1968 for $500.00 after getting out of the Army, that was out family car for a long time
I had a chance to buy a ready to drive1959 Fconvertible in early 1965 for $200.00 from a local garage in 29 Palms ,CA. I didn't because I liked the Hemi motors