Hey guys new guy here first post.. Long Story short I bought a 98 Mustang GT with a blown engine .. Got a donor 4.6 out of a 2003 police interceptor with the PI Heads and cams.. my mechanic swapped the engines for me , he used the NPI Intake manifold.. My questiom is : if i get the bbk long tube headers with the o/r h pipe on american muscle would it bolt up perfectly with the crown vic block? And would a PI intake manifold from a new edge GT directly bolt on to the block? Thanks alot guys I really appreciate any advice- Leo