I lost count of my swap initially i bought the motor tranny driveshaft, r-200 LSD diff, trust intercooler for 3500.00 US while i lived in japan.
You will not even get a rb20 swap on the road for less then 2000.00. I would go with a l28 turbo swap or leave the car till you can afford a real swap
figure what you think will cost to do a swap then double it and thats what it will cost