This motor is in my 90 Mustang. It's a 69 351W bored .030 with 69 351 heads (untouched). It has Speed Pro Flat top piston. It has 9:5:1 compression. It also has a hydraulic flat tapped Crane cams duration @050 216in 228ex. valve lift .484in .512ex, 1.6 Scorpion roller rockers, MSD distributor...