I went to Brewer's to post a link to one for you and they were sold out. So I believe it. In fact, they didn't have much of anything available and the one they did have that would have been useful (but still not OD) was $500.
Yeah that was my findings too at Brewers. I just bought the one from Oregon.
I bought some TTI engine mounts and plan to use their headers as well. After reading a ton of threads and research I'm still not sure what the best oil pan option is. The Holley pan seems like the gold standard and the best for preventing leaks because its a rigid cast aluminum. I know other options like Milodon and Charlies are good too. Then theres Jegs.. What would you do?