i have these for my camper they attach to the lugs and would look cool with a buick center or whatever to customize the look. the only sticking point may be trailers are 5 on 4.5 and yours are 115mm which is 4.528in might be close enough.
and you may want to get outer trim, i had a similar thing on my old pickup and just went to the jy theres alot of vehicles, cars, trucks, vans that have a trim ring just kinda snaps in. the trouble was finding four alike. i ended up getting two from one and two similar from another and just keeping them the same on each side.
1998 Bonneville SSE
2007 Monte Carlo LT-KYB, Clarion, Polk audio, Kicker
1999 Yukon SLE-KYB, Air lift, Reese dual-cam, Tekonsha
1987 Firebird-355/th400-nothing stock