I just bought this, and it was delivered on 7/3/20. Installed it today on the 4th of July (Happy Independence Day!).
Decided to do a review because I have to say that I am really pleased with it. It is a super high-end piece and will not disappoint you.
Every piece is overbuilt. I believe this will take the abuse with no problem. My installation is in a 67 Shelby GT 350 (a real one) with 289 HiPo. It has Tri-Y headers. The stock mount locations, and stock upper, and lower return springs are perfectly lined up (and are not overstretched nor under stretched). The Z bar push rod went through the firewall nice and straight with a few minor tweaks using the spacers and washers they provide in the kit. Before I put this on today, I installed the Mustang Steve ball bearing kit on the pedal support. I have factory power brakes and no issues with clearing anything (except the lower part of the z bar just barely is grazing one header tube and I mean BARELY. I may clearance it tomorrow using a small piece of steel and a c-clamp to only put a small ding in via a very controlled process rather than using a ball peen hammer as most idiots do. The z bar in this kit is almost the same shape as the original z-bar., so again no clearance issues (my original Ford Z bar also had the same issue just slightly grazing one header tube and I always ignored it).
After the installation, I put my foot on the clutch pedal and it was SMOOTH AS BUTTER down and up. The clutch pedal goes all the way to the floor and all the way up the clutch stop (the rubber stopper mounted to the pedal support) so I am getting the full range of motion.
Super sweet piece and I highly recommend it.