Quest for 7's in the 1/8

Right now I have the cheapest Jegs turbo muffler on the truck that I had laying around. Think there would be any gain going to the Flowmaster FX straight through design ??
Flowmaster 71226 Flowmaster FlowFX Muffler

And, I've considered these, but I worry about "too loud".
Flowmaster 71416 Flowmaster FlowFX Muffler
What is your system now, besides the jegs turbo muffler(s).?
If it's easily removable/replaceable , I would put on straight thru 3" straight off the headers, as header mufflers, assuming 3"collectors on the headers.
Keep the turbos for street, swap on the header mufflers to race. (Heck, you could even run both setups as an A-B test.)
Whether they would be worth much, or anything, is always a gamble. How much return would you expect for your $100?

(I think engine masters test of turbos vs straight thru vs Flowmaster clones, showed about 10-20hp for the straight thru vs turbo, on a 450hp engine.
I'll see if I can find it to confirm.)
When I was a kid, I'd swap exhaust as often as my underwear. Well, almost as often.....