I also plan on using the resin grill on the AMT 1972 Chevy C-10. I am going to use the front bumper from the 1972 Chevy Blazer since the 1970 Chevy C/10 didn't have turn signals in the from bumper.
Back in 2017 I bought a 1970 Chevy C/10 resin grill on ebay from seller hoppersbazaar for $16.00 including shipping. It is a very nice resin piece. I just checked their ebay store and they don't have it anymore. You can check later on. They might sell it again.
The AMT 1965 Pontiac Grand Prix had the fifth wheel, clear fuel test bottle, test gauges, tape recorder and traffic cones. The reissue that came out a few years ago included this equipment.
Very impressive builds. Well built and finished. I have family in Guanajuato. I fly down to Guanajuato every few years to visit. Take care and be safe!