273 for early A

I’ve got pretty much everything I need, as far as crank, rods, windage tray and oil pans. I’m hoping to get lucky and get 2 good heads out of the four 302’s I have laying around. My D4B will fit the later heads. I had it on a 318 in my 71 Challenger a few years ago. If I have to do any major grinding on the bolt holes to get it to work on this particular motor, I will just use one of the Edelbrock Performers that I have laying around. I’m wondering if the cam I listed will be too big for an 8.? compression motor? If it is, I have a few smaller cams stashed back that aren’t as big. I’d have to look up the specs, but I have a Lunati cam and a Mopar Performance 761 cam. I have a 761 cam in the 360 in my Challenger, and it works great.... but I know it will be much different in a 273.