Stock 3rd gen holset on the left. Stock appearing Holset on the right. You said it just needs to say Holset, correct?
That HT4B on the right is too large to run in the 3.0 inducer class at 3.3" but hey, it says Holset so it must be ok. I'll bet on the right truck, it could support 1000 to 1200 HP.
Better check the rules before you go out buying "stock appearing" turbos. :stab: