What headers for Big Block Scamp

I'm not positive on an RB but on a low-deck B-motor you can change the #7 header pipe on TTi's
and the Z-bar will fit. HemiDenny did this one on Hooshpuppy's car but I don't know if he has the
time or inclination to make any more of them. If he did, he would probably want all of your parts
and pieces in front of him. We are baffled why TTi doesn't just build them this way to start with.