I'm curious also, in the midst of a Dart Swinger project. Have a 572 Gary Stanton Hemi over 700hp. Will be running a Mopar crossram P5007534. Have a new pair of Holleys 4452778 & 9 in the boxes. Planning on using the P4510635 Mopar crossram linkage. P5007809 air horns. Intrigued with the option of EFI. Anyone?