Is this a good candidate for magnum head conversion?

Old Rick up there is right on. I like the Lunasty grind he talked about over the Comp. I could not get the link to work for the cam you posted, so I cannot compare. I see it's a Federal Mogul, so I ASSUME it's that .443/.465 204/214 @.050 on like a 114 that everybody makes. It's something close to that anyway. IF that's it, I say leave it alone and run it. It's a good little street grind.

I vote a resounding NO on the 3K stall for your combo. You need a converter that matches everything else you have and that ain't in. My vote goes for either a factory high stall, or a good 2500. The 3K unit is best suited for hotter cams and higher numerical gears than what you have. If you choose the 3K converter, it will be very inefficient on the street, because it will probably never achieve good enough lockup to eliminate excess slipping and heat buildup.

All of this is just one opinion. I am sure there will be many more.