I am looking for an LQ4. (01+, w/wiring harness)

I think I'd like to put it into my '89 K1500 RCSB. It weighs right at 5000 lbs.

I'd be tickled if I could keep my 5-speed trans till it breaks (If it does, I will hunt down an NV4500.)

3.73 open 10-bolt in the back, and 31.6" tall tires (265/75/16)

I would like something I could wind up on occasion, to the tune of 5500-6000. A little less if I still have the stock cam.

I know of a 99 or 00 6.0 for sale for $950 complete, but I hear it would be trouble to use.

I guess the question is, am I looking for the right engine for this setup? What would you guys change about the layout?

What would the experts of ls1truck have to say?