Looks the same as the Hasselgren Formula atlantic engine on there website although the pulleys are different hmmmm , I know that Hasselgren took over production of FA motors so they look different to the Original TRD ones in places , like the cam covers for instance. Don't rightly know maybe some one can shed some light on it ?
I can assure you it is as real as they get. In fact this is technically more real than the old Atlantics because the block has been strapped in a way that the old engines never were. What makes you say it's defo not an Atlantic block?
The main differences between race and standard blocks is the front cover & internal machining