Thanks for reply. You found same info as I did. The post from M3post.com is most valuable on P60 and P65 info, but still doesn't confirm P62. I'll try to write to my supervisor and will try to contact BMW M GT3 user from M3post.
Still any other information on this engines is welcome.
EDIT: BMW M GT3 has chosen not to receive private messages or may not be allowed to receive private messages. Therefore you may not send your message to him. - This sn't good.
EDIT 2: It looks like that P62B40 was raced only one time. It was in Sebring 12 hours race in ALMS in 1999. It was raced in Lola B98/10 by Team Cascadia and they finished 24th in qualification and not started in race. In many sources you can find they had BMW 4.0L V8, but no which exactly which. But Lola uses special engines so it could be P62. This is one hot trace.