transmission mounts · 1970-72 use rear transmission mount #12652 for turbo 350 ... · 1973-78 use rear transmission mount #12653 for turbo 350 ... factory heads do not have bolt hole in end holes must be drilled and tapped to ... frame mount #12677 use factory stock rear transmission mount 133 header dual ... length 17 136 modification of rear crossmember necessary for installation ... 138 will not fit with heater 139 front differential pinion is below centerline of axle 140 ... front differential pinion is above centerline of axle 141 ... frame 154 dual kit exits in front of rear wheels 155 will not fit manual ... not seal properly on heads with the end upper bolts lower than the center bolts ... heads 225 this systems exits behind the rear wheels 226 will fit c-6 transmission ... oil pan 262 will not fit with moroso rear sump pan 263 requires modifications to ...