Gerst Dominator Series 4 Link

Dart's have a 111" wheelbase, Dusters have a 108" wheelbase. So as Joe pointed out that's exactly the 3" difference. It's not the tank, it's just the wheelbase of the car.

Not using the stock tank is a pretty big drawback, and I don't even care about not being stock. I'm not a big fan of having the fuel inside the car, regardless of it being in a fuel cell. And the loss of trunk space is a problem. That's actually the biggest issue for me, I use my trunk because I use my car as my daily driver. And since it is a driver I would need a large fuel cell too, anything much less than 16 gallons would be a PITA on long drives.

Still interested in seeing the rest of the installation. I would love to get a measurement from the axle to the back side of the new crossmember though.


I dont like having the fuel inside the car either and the rules of the league I'll be running in say you can't either. So what I'm doing is cutting out the spare tire well and dropping a fuel cell that is 22 gal between the rails. I'll be building a fully enclosed cage with a removable top. The class I'll be in requires this regardless so it'd have to be done. I wasn't gonna keep the spare tire well anyway, so its not something I concerned myself with. I realize that'll be a turn off for others though.

as for the width of the crossmember, i measured 3 and 9/16 inches overall thickness. I checked my buddy's 70 340 duster, all original 340/727 8.75 rear car, i got 4 inches from the tank flange to the axle. So it MAYBE will fit, it'll be tight if it does. I'm junkyarding this weekend at a yard with a bodies so I'll try to remember to measure on some more just to check.