Centerline Wheels
Kinda depends if they were originally 5 on 4, and had the big pattern added, or if they were big pattern, and had the 5 on 4 added.
Adding the 5 on 4 pattern to a big pattern wheel is very shakey, not much meat left.
The 5 on 4 pattern lines used a smaller center hole (and cap) to give more meat around the inside of the small pattern. And to USE the big pattern after it's been double drilled sometimes calls for the inside part of the center hole to be relieved for axle hub clearance.
I have two pair of small pattern lines that have been double drilled for large pattern, but both are rear wheels.
That said..... I'd ask for a center hole measurement. If they are 5 on 4 originally, and still have the small center hole...... I'd give $150-$200 for the pair.
If they are 4 1/2, with a 5 on 4 added...... no interest, sorry.
Oh, BTW, the small center caps are available, but they are rare and expensive.
(Look for 4 lug Vega or pinto wheels caps, same hole size as the 5 on 4 wheels.