Buy it with zero miles
no
You Make Me Feel Brand New was created in 1974-05.
If it is a brand new engine take it back to where you bought it. Because if you do anything to you will void your warranty.
'You Make Me Feel Brand New' by the Stylistics.
A crate engine is a brand new engine, shipped in a wooden crate. The engine comes ready to be installed in a car. Their are many different brands and models, the term "Crate Engine" is used to differ between a "new to my car" engine and "brand new" engine. The other option is to buy a used engine from somewhere such as a junk yard.
Buy a new one?
There is a company called Brand New Engines that can provide you with a new engine. I expect they will be able to provide some how to replace your broken engine with a new one instructions if asked.
possible head gasket problems
Have it rebuilt (completely), or replace it with a new engine.
they will when you get a new one but it is not a problem
for brand new, a 883 sportster (883 cc)
b747-400 brand new from Boeing airplane company cost about $12.50 on special and $5.50 for just the plane without the engine.