This might be helpful or not, but I have the fast ratio arms on my 71 Satellite 340 and I run the Hedman block hugger headers. They output in front of the centerlink so you then have to route the exhaust over the steering linkage and out. It's a little bit of a pain but it's worked for me for the past 8 years.
Link to the big block version:
http://www.summitracing.com/parts/hed-78076/applications/make/plymouth?prefilter=1Edit: Looking at the picture of the big block headers, they curve a bit to the back, unlike the small block ones. It still looks like it would clear, but I don't know for sure.
