Unless that '58 started out as a low mileage well kept original, somebody has a LOT of time and money wrapped up in that thing! Lots of really nice looking chrome and interior pieces, which ain't easy to find for '58s. Very nice looking car.
I used to have a ton of parts for those unibody trucks, having had 4 of them at one point. Sold most everything over the years and only have one door and some front grille and interior pieces left, with the door being the only unique unibody piece. Your truck looks really nice. I really wish I had kept my shortbed '63.