How did you run your exhaust? Did you run it into one off the headers and then split it or did you run right off each header (3&3) all the way back? Just curious. (pictures would be cool!).
On Cliffords website they list a 3&3 slant 6 headers if ya want true duals,they are listed for 170 thru 225. I asked hooker about the 3&3 they make and they said that they're not sure if they would work on a 170.
Some people shouldn't own tools! I've spent weeks fixing all the stuff that the last "Ace Mechanic" did to my '65. I just take one thing at a time,fix it RIGHT,then move on to the next thing I find.