You sure seem to have a chassis that is missing a lot of very important holes... Was this done to be compliant with some sort of import laws? IE, if you can't bolt suspension and steering on, it can't be a car, therefore it's only a fancy shipping container? IE alloy Box..
As to the location of the holes, I would think that if you just center the rack in the front of the chassis, you would be able to locate the holes with a transfer punch.
My chassis is not here or I would measure for you..