Expected Improvements for 2021 ??

I swapped my car from TTI 1 3/4" headers back to my Hooker 2" fenderwell headers. I had to modifying some tubs to clear the snout bars that tie into the shock mount. I'm hoping to pick up some with the swap, but it's definitely easier to work on now. I would be thrilled if I picked up a tenth, but that might be a stretch.

My dad is putting his 408 back in the car, but with Trick Flow heads instead of the Edelbrock. Really hoping he picks up a solid 3 tenths, but time will tell.