I don’t have the phobia towards wood trim and chrome you might assume, I have a chrome Hurst shifter lever and bushed stainless pedal pads for example. A bucket list item I’d like to visit if I find the time and ambition would be carving the pre-production wood trim pieces the 94 Cougars were supposed to have, and likewise I’d love an engraved wood cueball shift knob to top the chrome Hurst stick. Like you see in late 60s mopars.
I just don’t see that handle or the 89-93 one as something particularly fitting for the interior shape, it looks like something for a 70s-80s interior with linear shapes. A filler piece would be just as awkward as the filler piece those awful Bostonian landau tops use to cover the inside of the covered over quarter windows. A better looking retrofit if you’re going to mod anyway would be the 96-98 Mark handles, the shape is wrong for the hole but at least the rounded shape matches the rounded interior.
I'll tangentially add to this. Automotive interior design is one of those things that I could write a thesis on because of my digital design background and interest in home interior design, but it's also interesting to point out the differences between home and automotive interior design.
Home design is much more forgiving towards trinkets that aren't part of the room's main aesthetic. In a car, you have a very limited amount of things you can mess around with such as shift knobs and pedals before your friends who know nothing about cars ask, "Did you add/do that?"
I try to avoid getting that type of question unless it's clearly intentional that I'm breaking from the original aesthetic, but even then, everything needs to go together. There's a fine line between, "That looks cool," and "That doesn't belong there."
If it "doesn't belong there", then I have to put in extra effort with everything else around it so it looks like it does belong there. Using my car as an example, if I had put in custom gauge faces without changing all the door, window, rear defrost, and climate control LEDs, I would have considered that half-assed.
As another example, I recently had local custom woodworkers work on a couple of kitchen cabinet faces. Even though I'm not interested, I'd hire them to really do justice to wood trim if I wanted it. No stick-on crap and no farming wood trim from other cars. My idea would be expensive as hell, but it would look damn good.