70's distributors were Duraspark mag pickup, with mechanical advance.  Same as the MSD Billet distrbutor.  You can use the duraspark to trigger an HEI module or MSD box and have the EFI control fuel only, or lock out the distrubutor and have the EFI computer control the advance.
 2800 cams turn backwards because the of the gear driven camshaft, Domestic 2.9l distributors will not work.

 Using 70's Ford Duraspark distributors for performance use is very common among the V8 crowd.

https://www.youtube.com/watch?v=oBSiyeg4XCU

 Sounds interesting. I'll give you a call. Thanks.

 
 351W 254-259 @.050" .371 lobe lift cam SOLD

Wrapping it up
https://youtu.be/JJnIZF4b_ag

  No, the way I used the early versions I had too make them essentially be part of the spark plug to be within the rules.  To manufacture them I want them to be a part of the head.  But also be be quickly removable is so desired.  Like I was saying in the video I did a redesign of the part that would be the way I would have preferred to use them during the Challenge but was not able to.

 None of you iron headed FE guys caught the spark plug thing at the end   FE guys from the other sites have been asking questions.

 Updated, N351 TD rockers are SOLD

Updated