Difference betwin 454?

[GDwrench]

Don't rule out the possibility of getting a "crate "engine. There is many choices of different power applications and price ranges also that can save time and headache of building an engine, especially if one is somewhat novice in mechanical ability ....I get a personal satisfaction from building my own, but there are times you wish it was as easy as hitting the "enter " key to purchase one! !