Pulled the tired 305 out of my 84 Monte Cralo SS and putting a 2006 truck 5.3 in along with the transmission. Got the Holley engine mounts and 302-2 Holley oil pan. I can get the mount bolt in on each side but the oil pan is barely hitting the front crossmember. Called Holley's tech service but no one has any idea on what the problem is. Any help is appreciated.