Just started a new project. A 56 Dodge P/U on an 87 Dakota chassis. The 86 had the six in it, I'm putting a 408 in it. I set the engine and trans in it today. The thans mount holes are about 4.5 inches to the rear of the mount holes on the bottom of the tail housing. It's clear that the chassis engine mount brackets need to be moved back 4 to 6 inches. My question for any of you guys that have done this is; Are the chassis engine mount brackets for the six mounted further forward on the chssis than the eight's brackets? Naturally before the final engine and trans mount location are determined the cab and fenders mount locations will be determined. Also has any one used Hooker full leangth headers, Hooker PN 5803-1 in a similar application?