All new parts for the nv4500 are made overseas,the only special tool we used on mine was a flat tip snap ring pliers, a bearing puller might be needed on the counter shaft bearings if your reusing the shaft,.There is also a tool for the 5th gear nut ,I just used a huge pipe wrench,and tightend a little more with a punch and hammer ,this was the updated nut for the dodge mainshaft,the chevy has a smaller main shaft,and nut,also the chevys dont seem to have a problem with it,I also cryo treated all the weakest parts.Motive gear makes decent rear end gears,main thing to look for would be timken bearings,and some kits use brass synchronizers instead of the lined ones,they shift harder but you can use 80/90 gear oil with them,and they are cheaper. With the right gear oil and the lined syncronizers they shift like a car.
