The generator matrix

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

generates a code of length 67 over Z8 who´s minimum homogenous weight is 58.

Homogenous weight enumerator: w(x)=1x^0+330x^58+456x^59+1201x^60+1064x^61+1875x^62+1844x^63+2579x^64+2388x^65+3265x^66+2816x^67+3223x^68+2528x^69+2746x^70+1740x^71+1832x^72+1044x^73+886x^74+352x^75+327x^76+80x^77+89x^78+24x^79+52x^80+23x^82+1x^84+2x^86

The gray image is a code over GF(2) with n=268, k=15 and d=116.
This code was found by Heurico 1.16 in 40.4 seconds.