Ughhh, one last time for you because I honestly think you aren't a troll, you just don't understand.
8130-6 is an application for airworthiness certificate.
Block III of the 8130-6 has a place that must be signed verifying the aircraft has been inspected and is airworthy. The FAA considers the signer of this block to be the "primary builder".
Only the "primary builder" can apply for a repairmans certificate.
Additionally, you must submit an application for repairmans certificate at the time of original certification of the aircraft. This means when the 8130-6 is submitted.
Therefore, when you apply for the special airworthiness, the primary builder (singed block III on form 8130-6) chooses at that time whether to apply for a repairmans certificate or not. There is simply no scenario where you can choose not to apply for a repairmans certificate, then sell it at a later date and have the new owner apply for a repairmans certificate.
You just can't convince some people that they are wrong, no matter how many facts are presented to them.