you'd be better off just shifting manually from the stock gear selector, and on top of that your chances of being able to shift quicker than your TCM in full auto mode are slim...
my advise to you is get a high stall converter and a shift kit...you'd be shocked at the difference and may not want paddles at all...
if you're not interested in upshifting and more into engine braking then like i said you'd be better off using the stock gear selector....
now you said you have a 2003 elenatra?
your specific answer is simple, just swap the TCM, wiring and switches over to your car...its up to you to find a spot for the switches, but the TCM and wiring are pretty straightforward, considering its all the same tranny.
the best thing to do, if you do decide to swap trannies (why you would is a mystery to me unless you really have some tranny issues), you would be better off trying a manual swap, which is a little bit of work to do on your back, or just rebuilding your auto...new bands, filter and fluid, maybe a new converter with a higher stall speed, a shift kit with stiffer valve springs and bigger valve journals, an LSD (which is like getting water from a stone for hyundais), new kickdown linkage and finally hard wiring your torque converter clutch to a switch on the dash (this will make your auto hold a gear until redline no matter what position the throttle is in)......
or you can just keep your transmission the way it is and leave it alone until it actually shows some kind of wear, which i doubt it would unless your neutral dropping it every time you're at a red light.
look just change the fluid and filter and use the gear selector in the console....this is too much work just writing about it, and frankly it's not worth it...this isnt a ferrari, ferraris have an electronically controlled manual, not an automatic with the gear selector wired into the steering wheel....people forget that all the time and think they are mike schumacher......try just maintaining it and use the stock selector....your idea can be done, but it's too much work for little or no benefit.
oh and you may want to look into the gear selector from an XG....they have a secondary gate that allows for manual operation...just a thought.
and you're still not going to be able to hit the rev limiter due to a fail-safe in the TCM, it'll shift before you do regardless of what kind of system you use...thats a cover our ash move by hyundai, and most other manufacturers as well
[Edited by Sunrise_Racer_20 on May 21, 2006 2:59 AM]
[Edited by Sunrise_Racer_20 on May 21, 2006 3:01 AM]
