What converter stall should I use?

Stall is usually best where peak torque happens or 1500-2000 rpm below shift points from what I've read. Suppose that number comes out to a 4000 stall for a 69 440 Roadrunner and you order one from your favorite speed shop. You put that sucker in and go for your first test drive and it's stalling way more than you want. That's because Wile E Coyote down at Acme converters rated that stall behind a 360 in a Duster for a middle ground, ball park number. I've experienced this first hand. Got lucky with the first stall from a popular company with a 2400 stall that was right on the money in our combo. Had to pull it out to replace a bearing and didn't want to miss any weekends of racing so bought a store brand that was advertised as 2800-3000 and it ended up not even stalling as much as the 2400. Finally listened to the guys on this forum that suggested ordering directly from the converter company. Mine came from Dynamics and they suggested a 9.5 converter that stalled at 4000 for our combo and it stalls on the number. The extra you spend could possibly keep you from having to drop that transmission another time.