Welding and grinding is a threshold I'd prefer to leave uncrossed. Except on a car I ran predominately on the track, I'm not sure I'd like to install anything I knew would make me wish I hadn't at some point. I'd probably just replaceme the entire axle assembly which is available dirt cheap while also providing the option to have two very different cars, with different final drive gearing and different differentials biased toward the occasion. I love how modular these cars can be.
But back to the broader topic - and the White Line Watts Link in particular. My car's been on the lift all weekend to make its suspension weapons grade. The White Line unit is beautifully-designed but certainly not entirely perfect, at least at the point of actually putting it on the car.
I was disappointed to learn that various hardware components were either incorrectly-supplied or missing altogether. I was even more surprised to discover that many of the threads weren't very cleanly tapped and required a good amount of secondary refining and clean-up. But the biggest surprise was the differential cooling taps.
The differential cover is supplied with its own plugs that fit very nicely. However, despite the return port being perfectly-sized to accommodate the OE plumbing hardware, the inlet was far too small and is now being re-tapped to the proper diameter to accommodate the OE hardware and avoid any kind of cooling flow restriction a cobbled-together remedy might create.
Other niggles include Installation Instructions that don't necessarily correspond to the types and sizes of hardware provided and White Line's differential cover not accommodating the standard differential vent, requiring an alternate to be tapped on the axle. The last issue (to this point) has been the need to reroute certain lines to provide completely unimpeded range of motion, something the included documentation could've been much more useful had it mentioned.
Fortunately, my tech is phenomenally fastidious and discovered these issues in mocking-up the entire assembly before trying to put it on the car. None of them are issues that can't and won't be overcome, but it's still rather disappointing when such a dear product isn't "right" out of the box. Hopefully White Line takes notice and plans to remedy these issues in the future.
In the meantime, I'm really looking forward to driving my '13 with its upgraded upper and lower control arms and relocation brakets, FR-3 L Springs and 5490-B Sway Bar Kit with Shelby Adjustable Sway Bar Links, Shelby Caster/Camber plates and the White Line Watts Link. I'll be driving the car for a day or so before replacing the Panhard Bar with the Watts Link arms - just to have a way to isolate and resolve any potential issues that may require tracing back to a specific source before introducing something so entirely different from the car's OE suspension. After also refinishing and powder-coating each of the components to match, it will hopefully also look as good as I intend it to drive.