A person unfamiliar with different manufacturers could think a 223 Ford engine looked very similar to a 235 Chevy if there were no markings present. AMC engines are also similar with the exception of their weird intake/exhaust manifolds. The point is that any of these engines could have been developed as direct competition to the long successful GM engines. It's a well known fact that Ford and Chrysler developed small block V-8's in the 60's to compete with the 283/327 Chevy's. It's your truck, put anything in that you want. Personally if I was going to do that much work I would install a small block Chevy. There are still some Toyota purists out there and I have worked on their FJ40's as well as some with 350's in them. Individualism is what keeps the tuck hobby alive.
Fred

1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine