WHAT'S A 5+5? Is it a 5 cyl FWD with a 5 cyl RWD making a 10 cyl AWD??! I saw a CRX AWD in that fashion advertized in Autoweek once. Actually, I've been toying with (are you ready?) an AWD 2x8 cyl early Eldorado= 2x500ci!!! saw some high flow cats advertized in Paeco catalog: $450 ea. ALL THE BEST, PHIL