Question back at you for clarification in answering your question:
Did you install a "Single Action" hammer when you mention "Installed SA hammer..." in your SP-01?
Also, does that mean you no longer have a double action first trigger pull as you also installed a Single Action trigger?
If so, then no your SP-01 is no longer production legal.
Leaving the firing pin block parts in along with the double action functionality remaining makes it Production division legal.
Your second question, I believe, plays more to your sense of good sportsmanship. If you leave the parts in, but disable them, I don't see how that is staying within the concept of playing by the rules. But hey, it's your gun and your conscience.