fastest n/a slant six como??

I dont know much about whats out there but to at least give you an idea there was a guy around my way who had a black dart with aslant 6 in it. He rans 14s without spray and 13s on spray. He was at 250hp? I beleive. Theres a guy in Australia with a slant 6 with 600hp. I think he runs high high boost though. Not sure what times he turns.