If you ever wondered what happen to these two models? why they havent been reissued? heres your answer. The 4070A went on to become the Transtar ll, The die was changed to make the Transtar ll cab. This was seeable in the first issue of the Transtar Il, it carried the same frame and rear suspension as the old 4070a the second issue of the transtar ll went to the walking beam. The 4270's die was also redone to make the 4300 which like the later transtar ll has the walking beam rearend. The hood of the 4270 was lengthened if you look under the hood you can barely see this line, the sleeper was added. Now one could alter the 4300 back into a 4270(4200) just by cutting down the hood,if your skilled enough you could also change the haedlights back by using the headlights from a Paystar 5000 kit which could also be done to the Transtar ll cab as hell but rember the wipers on the 4070 a was below the windshield and the bottom of the cab would have to be filled in as well as it was changed for the Transtar II. The 4070 a and the Transtar 4270 were issued in 1973. these were the first Intenational truck kits produced ever. Ertl which used the blueprints of the real trucks Thus they were called Ertl blue prints models.