I would pursue it and make some 3" headers but I do not have money to do that anymore. I just wanted to let everyone else know who might be interested that now Columbia River Mandrel Bending has 3" collectors with 1.75" primaries for $135 and they can be used by cutting the collectors off any aftermarket headers for the Gs and Zs.

SPD exhaust, the only other manufacturer, charges over $275 for 1, 3" collector so this is a good price.

http://www.mandrel-bends.com/catalog...04ss-1990.html