BRP has options for you.
Power steering is a biggie, the vacuum pump is another. I put an l83/6l80 in my dads crewcab and it was a learning experience but worked out well.
Use an Aeromotive fuel pump, pre-filter and a post filter with return.
http://www.brphotrods.com/?gclid=EAI...SAAEgL_AvD_BwE
This guy did the PCM and harness for us. Great guy and very very helpful.
https://www.standaloneharness.com/ge...1-l86-l83.html