360/904 combo torque converter?

The stall converters stall is based on:

Cars weight
Gear ratio
Tire size
Cam size as well as other engine peramiters
And the intended useage of the car

If your a rookie or novice at this, contact a converter company for there recommendation
You can call B&M or TCI or a place that does only converters like Frank Lupo's Dynamic http://dynamicconverters.com/aboutus.htm, andthe list goes on.

I wish I could be of more help. But there's to much missing infomation to even guess.