Lance, here is how I would do this if i had to start over again w/ little/no money.
Get an engine-stand & a SBC core. Build the motor up to 400HP as you go, on a budget, not going too crazy w/ the idea you can at least run pump-gas/mix. You will get help along the way from good people like on RJ. When you network a project like this, you run into deals too.
Next, get a TCI or similar transmission for about 1K or less. Then buy a approximately a 3500 stall to go w/ it.
Once you have done the above on a budget over time, you will have gained valuable experience & saved some money... plus you will KNOW what you have.
Last: here is where you may get some help on terms.... buy a "Roller" body, chassis/cage, complete car less eng/trans... w/ fuel system & electronics. You may have better luck getting someone to finance a roller... at the very least, you will save money & gain knowledge. Good Luck!! Scooter