[Accelo]

I have been attempting to figure out if the BBC and SBC for our trucks are the same part. Looks like it to me with the hoses are the difference between them.
I also notice some have the spark arrester and some do not. Never figured out why and when GM changed. Full disclosure, I copied the photos from the f/s section.

I don't have a parts manual to look it up. Any input is appreciated.