Does anyone know if the Spintech Mid Length headers and more importantly their Y pipe will work on a 4x4 first gen? Their description says "and can be used off road with no cats for 2 wheel drives only" but it looks like in this case they're talking about the 4.7 option as they sell one of those that has no cats. Looking at the pictures on their site it looks like they hug the transmission like the stock y pipe does.

I'm looking at their system as it seems like their headers and y pipe are designed to be installed together and I would be able to have a true 3 inch system all the way to the tailpipe. I already have a 3 inch in and out flowmaster currently on the truck, TBD if I will actually keep this one I put in a 360 as I don't like the tin can sound it has with my 3.9, granted it is also a 3.9, so keeping the 3 inch would be helpful to me.

While I do have a 92 which has the larger diameter pipe to begin with, it would be ideal to just keep the current y pipe, but I don't think mid length headers would be able to bolt up to them like shorties would, and I've read that shorties hurt power compared to long tubes, but my truck being a 4x4 I don't think I can run long tubes without further modification, so mid length would bridge the gap.

 

Best bet would be to call them, and ask. They can tell you for sure, one way or the other.