I have the exact Aviad Daytona Coupe pan you mentioned on my 351w. After many years of scraping up my Canton pan, I decided I had to do something a few years ago.
I couldn't be happier with the Aviad pan. I now have over 4" of ground clearance instead of 3". The Aviad pan is a work of art. If I remember right, it did take about 4 months to get after I ordered it, but it was a winter project and it wasn't an issue.
Good luck.
