1 highflow resonator & 2 straight through mufflers (Dynomax/Magnaflow) = ~$150-200 & $100 to install.
Gains = ~5FWHP; maybe more???
Nearly all or even all the gains for half the price. Sounds like a decent plan to me.
Yes it is not stainless mufflers, but the piping still is stainless & mandrel bent!