What do you guys think...BB Complete

[OldSkool71]

I have a guy offering to sell me a built 396 complete on the engine stand with reported very low miles...it has a racing type oil pan with an edelbrock intake and carb...he said it was in an ElCamino that he bought from a guy after his kid wrecked it...he said it sounded good with a mild cam...car had an automatic in it...he parted out the rest of the car and kept the engine for another project...wanted to get a box Nova but never got to it...now want to off load the engine to make room in his garage...$1000 and will write a bill of sale stating that if I am not satisfied with the engine he will give me my money back..want can I do identify this engine if at all...all suggestions and comments welcome...

thanks, Ron