I bought your Doug Thorley headers for my 1994 JEEP GRAND CHEROKEE in 2017 when we were at SEMA in Las Vegas. They have literally been in the box since I bought them and I'm finally ready to install them. Can you send my the installation papers/tech data on these if able. I also forget if they have gaskets included or not. I cannot wait to hear these! Also, what power gains were seen by merely installing these headers? I have a 3" single exhaust now, with a Catalytic convertor and Magnaflow muffler. Thanks again!

Question

I bought your Doug Thorley headers for my 1994 JEEP GRAND CHEROKEE in 2017 when we were at SEMA in Las Vegas.  They have literally been in the box since I bought them and I'm finally ready to install them. Can you send my the installation papers/tech data on these if able. I also forget if they have gaskets included or not.  I cannot wait to hear these!  Also, what power gains were seen by merely installing these headers?  I have a 3" single exhaust now, with a Catalytic convertor and Magnaflow muffler.  Thanks again!

Accepted Answer

Hi Doug, The part number in question is a Doug Thorley header and unfortunately we do not have any instructions for these headers. If you have any other questions please do not hesitate to reach out. Thank you

Product Name	Doug Thorley Tri-Y Header for 1993-99 Jeep Grand Cherokee	SKU	THY-630Y-C
Vendor SKU	THY-630Y-C	Prop65	Yes
Brand	Doug Thorley

Doug Thorley Tri-Y Header for 1993-99 Jeep Grand Cherokee