there are a TON of aftermarket/performance parts if you know where to look. the following brands cater to the fwd mopar segment. just remember that a daytona and a k car share the same chassis design - so anything that unbolts can be swapped....you just need to know what parts work together - but it will all fit the car.
polybushings.com - every drivetrain and chassis rubber you could need, replicated in peformance polyurethane
csracing.com - custom hd adjustable panhard bars that replace our flimsy u-channel track bars
forwardmotion, turbosunleashed and fwdperformance all sell a variety of fwd mopar parts - mostly for turbo cars, but there are many custom pieces that non turbo cars can benefit from as well (like a really trick billet t-stat housing) and an LSD specific to the 87+ 3spd auto in our cars.
http://www.jcwhitney.com/autoparts/Prod ... 27/c-10101http://www.rustrepair.com/repair_panels ... r-aries.81other info sources:
http://www.turbodiy.com/Mopar%20Pages/T ... detail.htmturbododge.com and turbomopar.com are awesome forums for discussing k based and L body vehicles - everything from an Omni to a Daytona Iroc RT