The stick isnt going to magically change the internals.

I'm not saying they'll be terrible, but they are by no means a modern box. Old design, but definitely strong.

If you can fit one in the tunnel, and I dont really see why one wouldnt, a T56 Magnum would make a lot of sense.

Stronger than a TKO although more expensive, and far superior synchro internals for better shifting.

Either would be good options though