In my /6 - 400 '71 Duster;
I used the Shumaucker (sp!) swap mount & torque arm.
The 727 bolted right in.
Driveshaft was shortened for a few inches
8-3/4 rear with Dr.Diff high strength axles with the larger 5 on 4-1/2 bolt circle
Lokar cables & B&M shifter
Headers are from a B body, Hedman Elietes. (Sp!)
(See the tech section @ bigblockdart.com for instructions)
2-1/2 straight pipe into Mufflers ending at the axle
Running an electric choke (800) TQ on top of a Holley Street Dominator & a open element air cleaner.
When it comes to the driveshaft length, it will be measured accordingly as per the instructions of the driveshaft maker. Most take the measurement from the rear yokes flat spot where the strap bolts to up to the flat vertical surface of the Trans where the shaft comes out. This measurement I did not write down but may vary a lite for each car.
Check with a driveshaft maker for there method.
I have MoPars S/S spring installed. The rear tire is a 275/60/15. These will also slightly effect driveshaft length.
I purchased a new Summit aluminum radiator since the car came without a radiator. Also being a late year engine, the water pump is different. It shares the same locations as a small block. The radiator is thicker than a stock unit. I would have to use a thinner Hayden clutch to use the stock fan. My son in law gave me his electric fan that works well so far.
