I haven't stopped, that's what I run in my personal street engines - when I get a chance to build one for myself! The last one was for my wife's van that we tow our holiday trailer with. I also build more torque from smaller engines than others so that I don't have to sacrifice performance for fuel ecomony. 12% higher fuel cost for 5% more power doesn't make sense to me but it might for others.

In my engine building business I mostly build racing engines with the occasional high-end street engine thrown in, so I do know what I'm talking about. I also dyno and tune all my engines. On my list this month is an alcohol Sprint car engine with 14.5:1, a couple of ministock engines with 10.5:1 (pump gas class), a twin-turbo EFI 4.3l V-6 8.3:1 with 12 psi boost and pump gas - and if I ever get to it, a twin-turbo Pontiac OHC 250 for myself.