any one have spd tune advice

thinking about getting the supper panty dropper from truck source diesel since I've heard great things about that tune. my real question is what torque converter lock up are most of you guys running with this tune. they offer normal which is 5th or early I think is in 3rd and also a both option..it would be mainly for dd but racing some sand drags here and there is always an option. keep in mind I have a stock trans still. thanks in advance for the replies