slicky rick

new to this forum guys. anyone care to shed light on some issues, i just bought carlsson evo 1/6 8.5x19 et 40 with 255 40 19's for my w140 s320 with 20k original kms. installing it this week just having hubcentric rings made. could not find an original set so i am having a set fabricated from the local machine shop. expensive but i cant wait..Any idea where i can buy hubcentric rings? also the original bolts do not fit the wheels at the back. too long, does anybody have specs on the wheel bolts that will fit. i am thinking of just cutting the original bolts. lastly any comments on what i will be doing? will this hurt my "snowy"? i call her that cause she is as white and pure as snow. will it drastically hurt the ride? i have a factory catalog of wheels and unlike most who think 18's are the max to go on w140, the catalog suggest that the biggest is 19"ers. "king Size" was the term on the catalog. Will definitely post pics before and after for all to appreciate..