I plan on installing the SLP or FLP headers on my 99 TA vert. I remember seeing somewhere that there were some potential problems with installing headers on verts.

 

I only had problems with the KBDD subframe connectors that occupied the same space as the FLP Y-pipe. That was easily remedied by cutting, and rewelding one part of the SFC ($60). Other than that, I had no problems. You'll have to bend the cross brace down a little bit, too, but that's not uncommon with any of the F-bodies with FLP's. SLP does not recommend installing their headers on 'verts, if I recall correctly.

 

No major issues with Macs and KBDD.