Are the TTI shorties really my only option?
Those are for street rods. The collector on the d.s. will be pointing right at the steering box on any stock Mopar chassis. Who knows what else will be a major interference.
The TTI shorty hheaders are fine, I have them. Just make sure you get TTI's connector pipes and bolt them to the headers
before installing into the chassis. Actually, if TTI makes long tube headers for your combination I would recommend them over the shorties.