Well of coarse there are better options out there. I have a 6.0 Gen3 sitting in my garage i could have slapped in there, but i wanted to stay original as possible. I had my engine built out of Eugine OR. bored 40 over, ARP studs, cams, headers, intake, full custom exh, i mean my dad has a 75 FJ40 with a SBC and i hang with him and that cruiser smashes. I literally have had tons of people ask me if i had a v8. But yes there is tons of things you can do......i just like to have mine street legal and not have to deal with a ref or anything. Also if you are under geared its going to affect the hell out of your rig.......especially if your an automatic.