Is there a problem with these transmissions? It has 40k since this broke last time and it may have had an upgraded gear installed then. Cant remember what it had though. Any ideas to make it last longer? The edge chip probably overpowers the trans I'm thinking. Help?

71 Barracuda 383 4spd (500ci)
69 camaro 598, NOS
69 barracuda bbc procharger
77 t/a 6.0 turbo project
78 t/a 400
77 corvette
1983 hurst/olds
03 Viper
79 360 macho
71 demon 360
78 Warlock 5.7 hemi project