My westy 1984.5 with an ABA conversion shows 146000 on the odometer.  I
think it may have the original tranny in it.

It makes no noise; the stick shift does not jump. It is working perfect. I
changed the fluid less than 15000 miles ago it showed no metal etc.

Do I need to replace it, or will it give me notice? I noticed on the
GoWesty site that they state it gives no notice, is this true, or is it
just a way to sell transmissions?

My last question is a transmission with a higher gear make, does it better
on the interstate or does it make it an even worse hill climber?

Once again thank you

Mark