Plymouth Duster Suspension/Tubbing Question

Plymouth Duster Suspension/Tubbing Question - Drag Racing

Wilson340 said
I'm currently working on my 1973 Plymouth Duster 340 and need some advice. To be upfront I am very new to car building and I'm learning as I go. My goal is to build a 10+ second car for the quarter while keeping it a 340.

1) I'm in the process of getting an 8 point roll cage professionally installed and my rear suspension redone. I need to know whether to switch over to a coil over suspension (QA1 drag stage 2 coil over suspension kit is the one I'm considering) or if after market (Mopar Performance Leaf Springs paired with QA1 shocks) will suffice to reach my goal?

2) Does anyone know the max wheel width size a 73' Plymouth Duster can have with a leaf spring relocation done, no mini tub and not have the tire sticking outside the fender?

I'd appreciate any advice. Thank you!

Save yourself time and money. Don't relocate the springs, don't mini-tub it, just get Caltracs with their shocks with a 275/60 radial drag tire and that setup will be more than capable of enough traction to run into the 9s or faster. I'm sure half the members on this forum will tell you to use super stock springs because Caltracs are for Chevy's. That's pretty much the dumbest thing I've ever heard. SS spring will raise the *** end of your car 3' in the air. Caltracs has the option of stock ride height or 1" lower. I'd go with the lower. I used both on my car when I was drag racing. I though the Caltracs were much easier to make work.