The generator matrix

 1  0  0  0  1  1  1  0  1  4  1  4  1  1  0  1  1  2  2  6  1  1  1  1  6  6  4  1  0  1  6  2  1  1  1  4  1  6  1  0  4  1  4  0  1  1  2  4  1  2  1  1  6  1  1  4  0  1  2  0  1  4  0  1  1  1  1  1  2  2  1  1  2  6  4  1  2  2  6  0  1
 0  1  0  0  0  1  1  1  4  0  1  1  4  1  1  5  1  6  1  1  0  4  1  5  2  2  1  4  1  2  0  4  3  7  1  1  2  1  6  1  6  6  1  2  3  7  4  1  2  1  0  3  1  3  4  2  4  6  1  1  0  1  6  7  2  5  7  3  6  2  5  4  4  4  1  6  4  0  1  0  7
 0  0  1  0  1  4  5  1  1  1  1  5  4  6  4  6  3  1  6  2  5  0  2  7  2  1  7  7  7  4  4  1  4  6  3  6  7  1  7  4  1  5  2  2  1  3  1  4  6  5  5  4  1  3  6  1  2  4  0  3  6  1  4  6  0  5  5  7  1  1  2  7  2  1  3  3  0  1  5  1  2
 0  0  0  1  4  0  4  4  1  1  5  1  7  1  1  6  6  0  5  2  7  5  3  1  1  7  5  2  6  4  1  0  6  5  4  4  3  3  4  3  4  5  7  1  6  1  3  2  7  6  6  5  7  0  0  6  1  7  0  6  2  2  1  3  6  3  4  6  2  0  5  6  1  1  7  4  1  7  5  7  5

generates a code of length 81 over Z8 who´s minimum homogenous weight is 75.

Homogenous weight enumerator: w(x)=1x^0+232x^75+294x^76+462x^77+333x^78+440x^79+390x^80+364x^81+325x^82+254x^83+157x^84+226x^85+95x^86+132x^87+114x^88+84x^89+36x^90+54x^91+35x^92+44x^93+10x^94+8x^95+1x^96+4x^97+1x^98

The gray image is a code over GF(2) with n=324, k=12 and d=150.
This code was found by Heurico 1.11 in 0.762 seconds.