Way back in the day, when I worked at Urban Arco in Fairfield, we pump jockeys had a running joke: whenever a customer came in with any kind of engine trouble, as Sam (the boss/owner) was consulting with them, one or both of us would walk up behind the prospect.
Sam (to nervous customer): Worst comes to worst we could put a rebuilt engine in it. ATK makes guaranteed engines and ships them overnight, so—
Me (over the customer's shoulder): Or you could just drop that 350 in her.
Dwayne (who would later be fired for allowing thieves who claimed to be from Interstate Batteries to steal our whole rack of like 20 brand new batteries & even helped them load them): It'll fit.
Me: That one laying there in the back room next to the air compressor...
Sam: GET OUT OF HERE!