Purple Cam Design Question

I kinda thought it was about ramps, area under the curve, and all that. Newer cams having more lift because of better heads being more prevalent makes sense, too. Getting a better idle sounds good, too.
I bought this 360 not knowing what was in it. It idled at 1200 or so, and had 7" of vacuum. I've taken it apart just to see what was in it and what kind of shape it's in. So far, I've found ported 915 heads w/ 2.02 intakes, a purple cam that checks about .509", KB199 pistons (10.5:1). I'm going to check the actual compression ratio. It has a nice cross hatch, Not too much bearing wear, but there are some scratches in them. I'm going to replace them.
It had a Torker II w/ a 750 vac sec Holley, 1 5/8 headers and a Unilite ign.
It's going in my cloned 71 Duster, a street/strip car that's just going to be a toy. It'll be about 3000#. I also have a 727 auto w/ a loose converter (I forgot to powerbrake it and check the stall before I took it all out of the truck it was in.) and a 4.11 gear. I eventually am going w/ a 4 spd and a 408. But it'll be a while.
It sounds like this cam will be fine for my application. I don't need a nice idle for this car.
I guess they didn't take advantage of the wider lifters back then?