So I might be starting a new project (no, not with the aveo) similar to an aerial atom. I'm having a tough time finding a v6 with aluminum block and head and as the same bore as stroke (ex: 86mm x 86mm). But the bore can be slightly less then the stroke (ex: 83mm x 86mm) but not the other way around. I just finding potentials but then they end up either being iron block or to much stroke.