HELP me identify motor health/worth! PICS!

[51Chevy3100]

Gentlemen,
*I posted this in the general "engine" section but I figured here was a better spot so the other can be deleted. Thanks*

I need some help deciding if this is a good motor/tranny set up for my 1951 Chevy Pickup. Also let me know what you think it's worth.

Pulled out of a stock 2001 Tahoe with 71K miles.

Holley EFI Fuel rails
LS6 Injectors
LS1 Intake
Heads have been milled and tested, 3 angle valve job
New headgaskets5th
the block was gone through but not disassembled, everything looks good in there.
New Oil pickup and oring
new gasket on the oil pan
LS1 Fbody oil pan
130amp Alternator
Dirty dingo low alt mount
Custom water filler neck relocation

The Wiring harness is a BP Automotive setup with all the necessary relays and fuse box to run the 4L60e as well

Tranny is stock, has an Fbody shifter. The torque converter is a trailblazer SS unit and has a little higher stall than a normal TC, but not ridiculous.

Any concerns with it not having a truck intake? I have some dually wheels and tires I may make a trade for this and want to see what the quality of these parts and value of the package would be. I don't know much and was just planning on pulling a stock ls 5.3/4l60E out of a junkyard vehicle.