I have a 96 S 10 that i want to swap a fresh stock motor to is there any reason to stay year specific with the long block. Also i know that a G M remain. is probably best ,but what could be the biggest difference in using a long block from say,auto zone,checker,pep boys, auto parts stores.could use some help with the decision

 

What is prompting this decision? You could have your engine rebuilt for less than a long block. How is your compression and leak down?