Stiffler's K-member Brace LCB-M01

I am looking to purchase Stiffler's LCB-M01 and also the spider brace for my 2004 Mustang Mach 1. I have been seeing conflicting info as to whether LCB-M01 will fit with long tube headers or not. I read that LCB-M01 was redesigned to work with long tube headers and upon contacting Stiffler's, they confirmed it was redesigned to work with long tubes, but cannot confirm they will work with all long tubes.

I have some American Racing Headers, 1 7/8" primaries into 3" collectors with their 3" catless x-pipe that will be making their way onto my car next year and want to make sure everything will work together before I buy the LCB-M01. Hopefully somebody can confirm whether this combo will work together or not. Thank you.

Your best bet is probably to wait until the headers are installed then break out the tape measure.

My old 04 had the spider brace and k member brace and it fit with my SLP headers. It does hang decently low FYI.

I have the matrix brace, k member brace, and arh 1 3/4 long tubes. Everything fit perfectly. I cannot comment on the spider brace setup.

I have the entire Stifflers catalog with 1 7/8" x 3" collector long tubes. Everything fits. If you want to see how it looks and fits my build thread is below.