I have installed several Toyota PS boxes on TF trucks and one 56 Ford F100. On both they mount inside the frame in the same location as the stock box. I think the frame is different on an AD truck so you may have a clearance problem with a V-8 application. The PS version came from an 84-87 4X4. It's possible that the non PS box for this era truck may be used if it was offered.
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