Sounds like he already selected a grind, and it's a flat tappet type cam, not a roller.
Regarding the 2102, it's a standard "RV" cam, which is a 40+ year old design. It has very, very lazy lobes, meaning they're shaped like an upside down V, rather than like an upside down U, which is more optimal or ideal for those heads. Some people prefer aggressive ramp rates or lobe intensities (upside down U) for most area and power under the curve. Others prefer the inherent longevity that may be realized from lazier lobes and lighter spring pressures, at the cost of a few ponies. With an L31 wearing vortec heads, I'd want steepish lobes and max lift would depend on the application like the duration would.
Is this '89 block set up for a roller? Can it be?