What is the difference between the 231 and 231 HD.. i recently fried mine and need to replace mine in my truck and i believe i have the 231 and was wondering if the HD version would be stronger since i do do a lot of towing. I have a 97 dodge dak slt 5.2L standard 5 speed club cab in case that helps

 

The HD stands for Heavy Duty. If I remember right it is has a wide chain. Go ahead and use it.