Cool shop. Got some good info about the fuel pump. With regard to the 4BT, not convinced for a TJ although the tech info is good.
Those videos apparently from the owner of the jeep in the shop video above confirm my feelings about a 4BT in a TJ. So obnoxiously loud and not in a good way.
I'm sure it's a niche type that would like the 4BT in a TJ... I'm not sure if I'd like one but I had thought about a diesel swap fr mine at one point.
But I'm also not sold on the 1.9 or the 2.8 having enough umph to satisfy me or my desire for power.. I'll take my V-8 instead. But we all have different goals with our rigs too.