I am looking at Molnor or K1 7.1 long hbeams for my new shortblock. Someone from Campbell enterprises said the Molnors would be on the edge at 1000 hp. I will have a stroke of 4.315 and flat top 4.5 bore 1.45 compression height Gibtech piston, lightened, and rpm will be 7500 or less. About 950 hp. 15/1 compression and alky. Is there a differance between Molnor or K1 in strength? Any other options for a 7.1 rod?