Rob, here's one possibility:

4 scor & 7 yr.z ago our fathRz brawt forth on DIS contiNt, a nu n8tN, conceived n Liberty, & dedicated 2 d propositN dat aL men R creatD =.

nw we R engaged n a gr8 civL wR, tstn wethR dat n8tN, o NE n8tN so conceived & so dedicated, cn lng endure. We R met on a gr8 battle-field of dat wR. We hav cum 2 dedicate a portion of dat feLd, az a fInL rStN plAc 4 thOs hu hEr gave thR lives dat dat n8tN mite live. It iz al2gethr fitting & propR dat we shud do DIS...