I’ve always believed the “after 2/20” thing was merely an indication that the Drag Pack wasn’t properly called or marketed that until that date. Before that date, ordering 3.91 or 4.30 gears triggered the same component package, so the net effect is the same–it’s just marketing.
That’s why I was thinking the window sticker was for a 3.50 TL car, cuz the price for the TL and optional gears seemed too cheap for all the improvements.
Note the following is for Mercury;
Which is why the bean counters, warranty and marketing departments came up with the “Drag Pak” option. It allowed an increase in price to account for the additional components that engineering mandated for the 3.91 and 4.30 gear sets due to oil temperature.
The Super Drag Pak option in 1970 was added as its original intent was that all 4.30 gear sets would be installed with a Detroit NoSpin which involved addtional cost and to allow a premium.
1970 Drag Pak 3.91 TL msrp $155.50 dlr cost $122.95; Super Drag Pak 4.30 DL msrp $207.30 dlr cost $163.94
There was insufficient supply of Detroit Lockers to meet the demand that resulted in some of the Super Drag Pak orders being filled with 4.30 Traction Lok instead of a Detroit Locker. This is sometimes noted on the Eminger invoice with a credit to the dealer for vehicles that did not get a Locker.
I saw on CCOA and article about the number of surviving cars and they showed around 2% base on people who had registered with them. I thought it would have been closer to 10% at least on the “special” cars. I guess the special one’s may have been driven harder i.e crashed more. It is up to us to restore they cars before we get to old. Not like our kids will do it. A neighbor has a 73 'cuda which he says he is going to restore when he has the time/funds. I have seen that car sitting for close to 20 years and no he won’t sell it.