Curious where that picture came from but it is wrong. That part number 2875776 is for a SINGLE point distributor 340 auto in 69. The single prestolite type can has a longer length at the hole that connects to breaker plate. DP is shorter at that bend. Also, Prestolite single point distributor vacuum can carried the IBP- part number. IAZ is a dual point number. Prestolite did make parts for the single point in MOPAR parts boxes.

67 273 dual point uses 1843034 used IAZ-2023RG
68 340 DP uses 1689765. used IAZ-2023RA

The Prestolite books do not cross the RF to those distributors. Again, the low vacuum arm #, 7 is not typical for late model Mopars.