after i get finished with my four cylinder up grade. A allis chalmers 226ci 65 horse 8.1 factory (4x4.5). massaged out to(4.625x5.77) 388ci and 15.2.1 compression . i will either be in the market or doing a 292 buildup . I am after 400hp and 400 ftlbs from 5200 to 7grand before it bowes its head is this feasable