Doing some changes, having to have custom copper washers being made in so doing the math on the 6 Stud Kit $23.95 (6 Plated Nuts and 6 Washers) and the 7 Stud Kit $27.95 (7 Plated Nuts and 7 Copper Washers)"SHIPPED" USA 48 States, them other 2 states e mail for a quote.
SHIPPED PRIORITY MAIL -average of 2 to 3 days for delivery .

Washers are .040" thick x 16mm OD x 8.4mm ID #110 Alloy Half Hard
Acorn Nuts are Plated & Flanged, 16.75mm Flanged Base -Smooth Bottom X 16.50mm tall, Head Size is 12mm (Wrench Size) 15.90mm deep.