what is better, i knwo urethane can take a beating and not break, but i have had issues with urethane sagging on my old cars, so i'm thinking the abs would be better since it is stiffer . what are your opinions thanks guys also pics would be great

 

how did you attach the urethane on your previous cars?? abs i would say is almost as durable as urethane...i would definetly stay away from fiberglass though...