I've wanted to build a boosted 4.0 for a long time. If is far superior in strenght to the slant. It has 7 main bearings. In the 60's Barney Navaro turbocharged a 200 inch amc 6 to over 600 hp. I've seen a jeep build up to a turbo stroker 6 make 700 hp. ( the limiting factor to it was the jeep efi.) Going to a tunable system would have allowed it to make more power. I have a lot of respect for both engines. Even though I'm building a "big" v8 for my valiant.
