Roller LA cam into Magnum?

So what you say is a 360 like 1999 has a different cam that advertised by most on the net. I have a stock 1999 360 mag 4x4 that I think is a little doggie runs nice but not enough towing torque. I believe I have the .432 lift cam in that motor. do you have or know of some specs for my truck? {3.55 gears auto 30 inch tires.} Thanks
So you put a 5.2 cam in? If it feels doggy you probably need to look further than just going with a cam