Reground Cam

Ken at Oregon cams is quoted saying : "Said the big difference (as far as regrinding goes) was not between the 5.2 or 5.9. But, between the Mag truck engines and the car roller cams." The Magnum V8 only came in trucks and vans? No cars. Or does he mean people send him aftermarket retro fit Hyd Roller cams for the LA engines wanting them regound for a Magnum engine?