Original red 273 hi-po. I have orig. engine (worn out) Now has fresh 68 model 318. This has had EVERYTHING done to it. +30 bore, 10-10 crank,line honed,decked,rods resized,360 RV cam, double roller, HV oil pump,Heads milled, guides,hard exh. seats,all new valves & springs. Edelbrock...