Ok so my transmission(t19) started grinding quite a bit so I drained the fluid to change it and found 5 or so metal shards about the size of a pencil eraser so I took them out. Should I put fluid in and run it or should I throw an np435 that I have lying around in it. They are both 4x4 and I need the truck tomorrow, should I try an run ot or swap them. As long as I don't need to do any driveshaft mods that is.