I'd show you mine, but they are blah and not worth copying. I'll be going C4 and twin stick one of these days, most likely too.

I'm runnin a Hurst 3 spd, and JBfab twin sticks on my T shift D20. You're going to need a tunnel adapter for the 3 spd shifter. If you havent bought the twin sticks, I reccoment JBfab, great product, great workmanship, great customer service.
Not a real helpful pic but you can see the shifters thru the steering wheel

...I have 2 tunnel adapters. If your interested let me know.

I would suggest staying away from the fiberglass tunnel adapters. Both myself and a friend had bad luck with them. I used the steel model from Tom's Bronco Parts. I don't have a pic of that hand but here's a couple shots of while I was welding/painting:

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I build these for Bronco Hut.They are fiberglass and fit perfect.Others who have used similar fiberglass products were most likely made by someone who didn't have to use their own product so it fits like crap!Call Mellisa and she'll hook you up.Just tell her you want one of mine.JGZ

I used a fiberglass one years ago. It was fine and fit fine....I just cut the top hole to big. When we redid the Bronco for Jonah we went with the diamond plate one.
A couple things to consider. How are you finishing the interior? If you are using carpet any of then should be fine. If you are using a bedliner or leaving steel I would go with a metal one or the diamond plate one.

I will try to get a pic when Jonah is home.

Just another opinion for you.

No problem man...here's a few of the cover....

I originally had the fiberglass one and opted for the metal one (swap out) for a few things.
JGZ, no offense and I don't even know if it was yours but I got it from Melissa.

1) No center hole for the shifter, easy enough to cut but not the major concern
2) On the fiberglass one it was too long to seal against the floorboard/seat area to where I'd end up cutting into the fiberglass for a flush fit.
3) Because it's white and mounts on top of the carpet it would have to be painted black to match the carpet.

the actually quality of the fiberglass one is awesome I can guarantee it's as strong as the metal ones, good mesh on the glass and nice finish on the outside but it was one more thing I just didn't have time to deal with on cutting and painting.