im gonna be putting an a15 into my car in about 3 weeks and pulling the a12 out. it's been totally rebuilt, new timing gears and chain. $900 spent on head and cam. bored 20 thou high performance bearings done about 2000ks since rebuild. icluded is the orig intake and exhaust which i have kept it was doing 50.6 rwhp with webber and exhaust very neat little package. now i don't need to sell this but also i dont need it hanging around the shed what would you pay for it if your offer is decent it's yours.. i want atleast 650 for it but i dont know what these engines are going for so be fair.