The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  2  2  1  2  4  1  1  0  1  1  0  1  1  1  1  0  1  2  1  4  1  2  1  1  1  4  1  1  2  1  1  2  2  2  1  1  0  0  2  2  0  0  0
 0  2  0  0  0  0  0  0  0  2  6  2  2  4  6  4  6  0  6  4  2  2  2  2  4  4  4  2  0  2  6  2  6  6  4  0  4  4  0  4  2  6  0  2  2  6  6  2  4  6  4  4  0  0  6  0  0  6  0  2  2  4  0  6  2  2  6  0  2  4  2  4  4  2  4  2
 0  0  2  0  0  0  2  6  2  2  2  4  2  4  2  6  4  0  0  0  4  2  2  0  6  4  2  6  6  4  0  6  4  0  0  6  0  0  4  6  2  6  0  2  2  0  4  6  4  6  6  4  2  4  4  4  6  0  0  6  0  2  2  6  6  4  2  0  0  0  4  4  2  2  0  0
 0  0  0  2  0  2  2  2  4  4  0  0  2  6  6  0  6  6  2  0  4  2  4  2  2  4  0  6  2  0  6  0  4  0  4  6  2  2  4  0  6  2  0  0  2  6  0  4  0  4  4  4  4  2  0  2  2  2  2  4  4  2  4  0  0  6  0  0  6  2  6  0  2  0  0  6
 0  0  0  0  2  2  4  6  2  4  2  2  6  4  0  4  6  2  4  0  6  2  6  2  4  2  2  0  6  0  0  0  0  4  6  0  4  6  2  6  0  6  4  6  2  4  6  4  2  0  6  0  0  4  4  2  0  2  4  6  4  6  4  0  6  0  2  0  4  2  2  6  0  0  2  2
 0  0  0  0  0  4  4  4  0  0  4  4  4  4  4  4  0  0  4  4  0  0  0  4  0  4  4  0  0  4  0  4  4  0  0  4  4  0  0  0  4  0  4  0  4  4  0  4  4  0  0  0  4  0  4  4  0  4  0  4  0  4  4  4  4  0  0  4  0  0  4  0  4  0  0  0

generates a code of length 76 over Z8 who´s minimum homogenous weight is 67.

Homogenous weight enumerator: w(x)=1x^0+56x^67+101x^68+150x^69+194x^70+236x^71+276x^72+320x^73+345x^74+308x^75+351x^76+310x^77+286x^78+268x^79+191x^80+166x^81+153x^82+114x^83+65x^84+62x^85+31x^86+36x^87+32x^88+14x^89+6x^90+6x^91+6x^92+2x^93+9x^94+1x^108

The gray image is a code over GF(2) with n=304, k=12 and d=134.
This code was found by Heurico 1.16 in 1.37 seconds.