In either late 1970 or early 71, while I was a student at Caltech in the US, I found a Ferrari GTO 64 for sale for $7500! I passed on it because it needed $3000 in transmission work. Plus I was a student and a newly wed whose wife was pregnant with our honeymoon "oops" and so money was a little tight.
Out of curiosity, how much did you car kit cost?