I have a 1970 Mach 1 needing restoration. I ran into a guy that swapped a 2004 gm 5.7 into his 70 chevelle. It improved the performance and mpg unbelivably. Got me thinking has anyone ever swapped a 351c to a 4.6l police interceptor into a 70 mustang. I think it would be way more economical yet fast
