Rear Knuckles/Spindles and rear calipers ARE different between ABS and non-ABS Vipers. The bolt that holds the brake line to a rear ABS caliper will hit 15 or 16″ Drag-wheels that would fit 92-00 Vipers.
What make/brand/size of planned wheel/slicks?
The “free” wheels would cost a BUNCH to convert to Non-ABS spindles and inferior calipers !!! (ABS rear calipers are off a 1994 Ford Cobra!)
You should not have any ABS / computer issues so long as the tire diameter is within 94% of stock.