[Blown353]

I also received a set of ultimate headers from Jim about 2 months ago. I needed alternations from their standard dimensions based on the substantially raised transmission and tailshaft for proper driveshaft working angles in my car. I measured the fit from their off the shelf specs, provided them with drawings of what alterations were needed for my car, and they absolutely nailed the fit for only a small added cost for the alterations.

Great people to work with and great quality headers. Spark plug access is excellent, and they're very easy to install. Probably the nicest fitting (and looking) set of headers I've installed.

Funny you mentioned the 3.0 Whipple & Wegner combo-- I also have a brand new 3.0 Whipple and Wegner accessory drive sitting at the house... LOL

(It's actually for my car, after all these years I decided to ditch the still not completed twin turbos and go with the 3.0 Whipple. I recently tuned a car with a built LS3 and a 2.9 Whipple and that instant torque seemingly regardless of RPM is just stupid fun.)