Don't even look at 90-91 Ludes. Like I said before, they are FUGLY!! 4th Gen Lude Si's do a 15.9 with a good driver and should do mid 15's with basic bolt-ons. You might be able to find a 92 Si for 3500. Preludes are generally pretty expensive though. That's why I've been leaning hard towards a Teg LS.