You just have to remember that stock drum could be as old as 50 years old and has seen how much abuse before it became a race part ?? Pretty cheap insurance to get a billet drum. I know a lot of old school guys who have never blown one up - mainly because they learned early on how to drive them right. But I think using a stock drum with the available parts we have today is just asking for issues. A well known brand X Transmission builder always told me you MOPAR guys will spend $20K on an engine and $1,000 bucks on a transmission - and then complain when you break it !