If the molds still exist for any of the parts pack it would be nice to know what the condition is. (Yes I know they don't have to tell us anything.) They are a low parts count / very few spurs if there is even more than one so repair would be much less.
After the chrome engines did not sell I don't think they did know what sells. I personally think they dropped the ball on the marketing and the chrome plating of the engines. They would have saved money on the plating because the ones that people have used 90% seem to say they strip these parts anyway.
I was talking to someone at the Detroit model show last year, and he was telling me how when doing body modes he did not like using the accelerator on glue joints. He said that the joints became to brittle, his point of view from working with it.
When I went before work , the same Semi trucks were there along with the tanker. No 49/50 Ford but there were the 72 GTO , MPC 1969 Daytona and the 49 Merc snap police car.