Hello,
For all these vehicles, it's well about "Utilimaster Aeromaster [P-30]" or "1990 GMC Step Van [P-30]" ??
http://www.imcdb.org/vehicle_347467-Utilimaster-Aeromaster.html
http://www.imcdb.org/vehicle_462974-Utilimaster-Aeromaster-P-30.html
http://www.imcdb.org/vehicle_243588-Utilimaster-Aeromaster-P-30.html
http://www.imcdb.org/vehicle_881836-Utilimaster-Aeromaster-P-30.html
http://www.imcdb.org/vehicle_892572-Utilimaster-Aeromaster-P-30.html
http://www.imcdb.org/vehicle_979229.html
http://www.imcdb.org/vehicle_915582-Utilimaster-Aeromaster-P-30.html
http://www.imcdb.org/vehicle_919603-Utilimaster-Aeromaster-P-30.html
http://www.imcdb.org/vehicle_964890-Utilimaster-Aeromaster-P-30.html
http://www.imcdb.org/vehicle_318190-Utilimaster-Aeromaster.html
http://www.imcdb.org/vehicle_750716-Utilimaster-Aeromaster.html
http://www.imcdb.org/vehicle_811759-Utilimaster-Aeromaster.html

Because they are all referenced in "Utilimaster Aeromaster [P-30]" but on this site he is referenced in "1990 GMC Step Van [P-30]":
http://cinemavehicles.com/i-23142455-1990-gmc-police-step-van.html