How's it going everybody thanks for reading. I'm swapping the Trans and wanted to know what seals/parts I should swap before installation. The motor got swapped 6 months prior and the rear main got replaced then. The trans came from a car with 140k . Fluid is a lil dark but i didnt see any shavings i. The oil or on the drain bolt. Any other suggestions for swap besides flushing the Trans lines? Fluid for flush?

 

I'm literally doing the same thing and swapped motor about the same time, upon putting it all back in I've had nothing but trans problems ever since until finally the other day on eway around 70mph my trans acted like it locked up for a split second then started kinda jerking so I coasted off interstate tried going through the first light I came too and it died on me. I did notice excessive heat prior to all this happening installed trans cooler but guess I was too late with all of that.