Some people may advise you against this advice I am about to give, and if someone has more recent experience, then you should not listen to me...

I bought a motor from City Motor Supply in Dallas 9 years ago and it has always been very strong and run well. I was going to do the same thing again, but some people advised me against it. I don't know how they are now, but I can tell you for sure that they used to build a great motor, stock-wise. And for a short block, you would only pay $350 for a 351m.

Either way, I think that CMS would be better than an Auto Zone Engine.