Torque Converters

X2A 2400 stall will work great (minimum stall for an upgrade imo) for a stock-ish build.........

I somewhat agree. It needs to be remembered though, that if he has a factory high stall, he's sitting right on top of 2400. Also, the stone stock converters are a good bit higher than they are given credit for. They can bump 2000 RPM fairly easily with a few upgrades.