If you want to make money, get it running with as many used and junkyard parts as possible, and try to hock it off on someone.
If not, Go for this.
lq4 truck block, 6.0 Liter(sold in everything) ~$1000$
l92 truck heads, stock (from escalade) ~$900
comp cam(forget specs, look in car craft), MSD ignition controller, GMPP carb manifold for big ports, and an 850 double pumper. Proven to make 550hp at almost 7000 rpms, On mostly stock GM parts and a carb! Those heads are ls7 castings with smaller ports and smaller less high tech valves. No titanium here! But still they flow 300 CFM out of the box. Pretty impressive if you ask me, especially considering they are cheaper than most aftermarket heads and there still aluminum. You wont need an ecu, high pressure pump, and you can sell off the fuel injection gear if you get that with the block. That plus a 3200lb 3rd gen(if its a hardtop) = sick. Im doing this if the army pays up that 20 grand enlistment bonus as cash. That or a 2jz mk3. OOOOhhh the choices :0
PS as mentioned, this will kill the axle. If you use stock tires it should be ok as they will just roast away before the axle breaks, but if you get any kind of traction it will kill it. You will also need a th350/400 or t56 from an ls1 car. Oh and maybe ls1 accessories and pullies. I know the truck setup hits the throttle body, but im not sure if it fits under the hood. with a carb the TB problem is solved. Maybe you can use the truck stuff, im not entirely sure.