That Blazer is 1:24 and has a half-cab, so only good for '75-'80. That '76 pickup has about as much in common with the real truck's suspension as a wet paper bag...
That particular reissue of the Tahoe was done by reboxing old inventory of the promos, not by running the molds. Hence the disclaimer on the box of random plastic colours.
The '59 would be doable with a grille swap and hood insert while the '58 hood is different. And the '57 has a different lower valance panel between the grille and bumper...
Iceman Collections is going to be offering the Bronco roadster parts, designed by Fireball. Or, if you have a printer, join Joseph's Patreon and get the files directly from him like I did. 😁