I did the mods over 6 years, all used parts mostly, a part or so every year. If you got a bunch of cash just do a top swap or turbo.
When I started this I was making 20-30k a year, so I never had cash, I make 65k a year now lol. So next car when this rots out will be a rust free gp,2007-08 (cause my trans will just bolt in) and swap these mods over, I don't need a v8 I just drive it to work that's it lol.
Or just part out and get a 3.6l impala or charger or 200c, some kind of v6 with 300hp and try to leave it stock lol