The Ford inline 300 block is the strongest US manufactured inline (other than the Offenhausers) I have ever seen. The two pictured are both top dogs at the tracks they regularly run at. I'd encourage you to redo the block you have and build it up a bit to preform like the potential champion it is. Like HEI, incresed carburetion, reworked head, headers and a boost of compression. Have fun. If you do this you'll never be sorry.