There were four choices for power plants : the `` 250 in '' straight-6 , the `` 292 '' straight-6 , the `` 307 '' V8 , and the `` 350 '' V8 .
There were four engine choices : the the `` 250 in '' straight-6 , the `` 292 '' straight-6 , the `` 307 '' V8 , and the `` 350 '' V8 .