Ls 5.3 truck motor and 4L60e into 50 burb info

[fredscarryall]

I made the plunge into the Ls world today.it came out of a 2002 1/2 ton truck. I bought a 5.3 and a 4L60e transmission to put in my 1950 suburban.i made sure it came with everything including the computer and harness. It currently has a 383 stroker motor and a turbo 350 transmission.i was wondering what is the most affordable and easiest wire harness aftermarket or using the original to run the engine and transmission.i have a basic understanding of wiring.also want to know what engine and transmission mounts work good?also what exhaust manifold or headers work best?What are you guys running?Any advise is appreciated.
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