Rallye wheel center cap screw mount holes

3 bolts is balanced close enough........
An example which would also include the weight of the omitted screw bosses........
upload_2021-6-13_9-52-36.png


FWIW, The old rally centers I've had in the past always had 5 screws. One had to check that the new tire mounter reinstalled them all and didn't break any off.

This outfit may have the correct screws available in the "Hex Washer Head Screws & Bolts (Sheet Metal)" pdf........
Mr. G's Enterprises - Auto Fasteners (mrgusa.com)