you be surprised how fast you can spend 2 grand.. even without labor cost.
but if you want. you could open up all sorts of possibiltys with standalone engine management. uel heads with 2.5" back to a can. short ram intake. spark and fuel upgrades. and most important, hybrid builds. the 22e head on a 25 block is common. If 2.0 heads would fit and work idk maybe try it.