Ebay GT45 + 5.9 Magnum + E85 blow thru

By the way the headers are Chevy's with the flanges replaced with Mopars

"What headers" are they? By the way I did this back in the 70's putting a 340 in an old FJ-40 Landcruiser. A833 with (crap) advance adapter to straight through Jeep transfer case