o beleive me i know lol i had a bare block that was 2g hahaha :Idiots but with a junkyard motor id have to go thru it make sure its good, freshy fresh it up a bit, and so on. if ur mean buying alllllll used parts and just hoping theyll all work together then yes i can see 5g but its a huge risk. in the car world you get what you pay for 99% of the time