Engine block question

[datbmac]

I have had my car for about seven months and on monday i decided to take a look at the id number on the block and it says g4cn on the tag. It runs good and boosts fine but will this block be a problem in the future if I wanted to do a rebuild later on, and is there anyone who has any experience with these motors. Thanks for the help.

 

[MathixPerforman]

That may just be a series number because it should still just be a 4g63 motor, and as long as that's the case you won't have any problems