In peticular the join from the rear heads to the link pipe under the shock

Have a look in this thread. Alexwitham took a load of pics for me and might have that area covered

viewtopic.php?f=24&t=26156&p=186096&hil ... ck#p186096

It's ok I found out my idea won't work anyway, I thought if I could use tyfas rear heads then the lhs link pope from my tsr system I could do way with the rear stubby manifold thus making the system freer flowing and since the front headers are fairly straight forward it would almost be like a full system....

Oh well, I've too much Time on my hands that's my problem ...