Difference in Inline 250 Blocks and Accessories

[bubbasimms]

Good Morning,

I have built an early 250 for my 69 stepside project.
I'm not sure if there are any differences between the early 250 and the later 250 blocks externally. I am not talking about the integrated head 250. I have found a 75 chevy truck with a 250 in it. Its not a 292 nor is it the integrated head. The later engine has power steering and a/c parts on it that i want for my build. Does anyone know if the accessories, brackets and pulleys from the later 250 will bolt to the earlier 250? Both engines have the alternator on the lower drivers side. The last picture is the donor I am looking at. If anyone can confirm these will fit I would sure appreciate it.