Ls2?

[Kim57]

I've been posting this in a few places here trying to get as many replies as possible so I can make an informed decision.
I'm building a pro-street themed 57 P.U. and have come to the time to make a choice of the power plant.

#1-Build my new bare block 454. Needs everything.

#2-Get a complete 1999 454 vortec from a salvage yard that has 90,000 miles.
Will have to go through and freshen/replace what is worn out. It does have all the accessories and comes with the computer for the FI. The engine is $1,000. Would still need a trans.

#3-6.0 LS2 out of an 2009 SS Trail Blazer. This engine is only supposed to have 18,000 miles and has the trans and computer also. $5,000 for both.
thanks for any reply's.
Kim