The airplane definitely looks like the "Formula S" from 1968. There were 2 examples built - Jim Kostecky's which was published and his buddy Greg Zajac. Jim's featured a D-tube wing, but Greg's used a full ribbed wing like the earlier Talon design. The paint schemes were the same except for this: Jim's FS featured a cartoon graphic of a "Ukranian Lion" Greg's had a different graphic - something like "Ulitmatus Dompolski".
I am guessing that the picture was taken in 1968-Olathe (scene of the world famous beer can races) not 1967..?
Forgot the other part - if 1968-Olathe then its likely that the young man holding that airplane is my Much Older Brother Arch, who pitted for Jim at the NATs