Projects 1958 371 J-2 motor?

I will be getting a 40 ford pickup and it comes with a 58 371 J-2 tri-power motor. Just wondering if anyone has info on these motors? Good, Bad speed parts or just random stuff.

 

If you do a search there are several threads about the Olds J-2 motors -

 

Better hope it turns ha. I just had a bad 1st introduction with a 371.

 

great engines, stuff is not cheap for them.