Loss of Power During More Aggressive Acceleration

Hey, I was wondering if anyone else had this issue with their 3000gt.
I have a 1991 3000GT SL that I daily and drive pretty hard. It has had issues when shifting into 3rd gear, for example, and then giving a good bit of throttle. It usually starts to pick up speed quickly as you would expect while lowering the clutch, but then a moment after the clutch is all the way down it just slows and loses power as if it was straining. It doesn’t only happen in a particular gear but just occasionally when accelerating. All the components that I can think would relate to this are OEM other than the spark plugs and a high flow pipe. Let me know if you have any thought to help, thanks!