Buick Skylark (70/72) build, another A-body

[Sebambam]

Hey guys i would like to start this story about my build.
Its a "typical" untypical GM A-Body build.
I purchased this 72 Buick Skylark that has a 70 model Front conversion a hidious interior, a almost stock sbb 350, and a build 9 inch rear end with 4.11 gears.
The car was with its last owner for 15 years and is for what i want to do with it in decent shape.
I said decent not perfect at all.



So i have decided to sell my LS/ LC9 that was build for a turbo drag project (Sold the Car) and go
Non Aspirated LS with functioning AC, planing on 500hp +-.
I have not decided yet and would like to get more input.
Obviously the 1st option is a GEN3 LS:
i am not sure a 5.3 could be build failry easy for 500+-? but they are so cheap that why i always consider them somehow.
A 6.0 Truck based Lq4 or Lq9 is always a great option i think but cost 2x right away.
a ls2 comes with a price tag as well,
With that said the GEN$ truck motors become a fair option as well, question is if the VVT conversion etc is a headache?

i would like to keep it fairly easy with a CAM SWAP, possibly stock head swap , Tune and Exhaust system
while maintaining Power steering and AC.
Topic AC my car is a non AC car, should i consider a Vintage air kit or can i maintain a OEM Compressor with what system?

would be great to get some input on the motor choice
Budget is always in mind.
@ this point i am not planing to paint the car, i even consider a "fauxtina/Patina" look
the car will be definitly get a suspension upgrade with tubular arms in the front and a decent drop on 18 inch wheels with a decent rubber selection.
I will drive the car and want to have it reliable but Musclecar Nasty-ish