Headers for RB in A body

Getting ready to install my 588" RB in my 68 cuda. It has Indy 572-13 heads. It also has a Hemi Denny coil over front end. It will also have a motor plate. Do not want fenderwell or partial fenderwells. Would TTI headers be my best choice? Looking for the most room to work on the car.

Since I have a little more room, would TTI step headers for a B/E body fit?

TTI makes a set of the step headers for the raised ports of the Indy heads. But not sure if they would fit in a A body. I know it's going to be a lot more $$ but I would recommend having a set custom made to fit your engine/ car