Looking for a part number

First, thanks to the suggestion. As I understand it, what Lokar and S&P are selling is a Chrysler part number. If all else fails, I may have no choice. Here is the rub, I have found the Chrysler parts being sold by S&P and Lokar are priced close to double a dealer suggested retail. Don't get me wrong, I expect anyone in business to make a profit. That is what they are in business for. However, I suspect those companies have made a deal with a Chrysler dealer or maybe Mopar parts for a substantial discount. I've made a deal with my local dealer for purchase parts at 5% above his cost. I pay for parts when received and don't order anything I am not willing to purchase. Therefore, I'm careful to assure part ordered is the correct one. Another good thing of buying from dealer is no shipping charges. I even get to look up my parts on his system. If there is a mistake, it is my mistake. In the case of this part, I have spent hours looking for the part number. The dealer parts department has spent substantial time looking. Most recently a message to Chrysler parts specifier has been submitted.

67 Dart, 5.7 hemi, 10.5 to 1 ratio, biggest cam I could find, 6.1 intake and passages hogged out to match, 5 speed automatic overdrive, Strange 60 with Detroit Locker and 4.56 ratio, Willwood disks all around, Alterk front with power steering. CalTrac at rear. computer by B&G Chrysler Specialists Reason for need of this part is attempting speed control install. Oh yeah, one final thing. I ain't no Sally. Just a password