5 on 4 is not 100 millimeters. 4 inch = 101.6 millimeters. Yes, it is close and has been tried. Do a search on the site and you might find more information.
hmmm I did a search and didn't find anything on the sebring / SBP setup to see if it's work.
100 to 101.6 won't cut it. I'd rather be safe than try that, with my luck I'd break the lugs driving it down the street
thanks