Convince me to put a TKX in my Dart

Arthur Sperotto said
@72bluNblu , it seems we both like cruising 75mph at 2500rpm! We just have slightly different rear gears and tire heights. Also, I believe the giant hump might be the thing between the buckets where the console sits. See, I have bench seats, and keeping them is a must for me... I have my reasons. Cutting for the TKX doesn't even get close to where the bench goes. Could a T-56 fit? Maybe. I honestly don't know.

I followed your entire build thread, and you do have nice fabrication skills. I think @MopaR&D 's skills align more with mine lol. As in, I totally understand what he's saying because I feel the same way. I cringe at the thought of having to weld something... especially our uber thin 51 year old floors.

@MopaR&D , you nailed it when you said "still not sure I'd have a use for the 6th gear." And then remember it's $1k more! For something you arguably don't need in order to meet your goals! I hate the mentality of "if you're spending 6k might as well spend 7k". A grand is a grand to me, no matter what - it's equally as valuable no matter how much I'm spending. Is the T-56 a superior transmission? Absolutely! The TR6060 is even better. A PPG or Liberty Gears faceplated unit is even better than that. A Holinger sequential, even more so. Gotta step back and think, where do you draw the line and are satisfied?

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In my mind having OD split into 2 gears is only useful if you have short enough final drive ratio where they will be used under power and you don't want a big RPM drop going from 1:1 to overdrive. My setup doesn't really need that, I'd likely just use 1st-4th on the track or when ripping around. Now if I had a big-cammed engine that needed 4.10 or numerically higher rear end gears it would be a different story. For a while I had an 18-spline A-833 I considered swapping into my Duster but for all the work it seemed pointless to still not have overdrive. It needed a rebuild anyway and I had already torn it down so I just sold it as a box of parts.

And I agree, $1000 is $1000, I could put that towards other parts like some high-end adjustable shocks or a conversion kit for bigger front disc brakes or rear discs. Or some adjustable rockers with the B3 geometry kit which would make me feel a lot better about winding out my 360 to 6000+ RPM on a regular basis with a manual trans which doesn't really happen as much with an auto trans with small range of gear ratios and tall-ish rear gears.