Should I..

[Mark1968]

Buy a complete 6.0 + computer, pedal and harness for $700.

I don't need it, but wouldn't it be cool. I can hear it run before it gets pulled. has a slight tick.

 

[K85 Octane]

oh, wish I could dump that into my s10

 

[Teck]

700 is probably not a bad deal.
Small tick could be from the hardening coming off the cam.(Happen to a 4.8 I have)
So it may need some work before it would be good to install.