[joedoh]

you will want to move the engine back before mounting the cab solid, its much easier to work on the trans crossmember with the cab off.

you have a truck that the fuel lines run through the frame to the front crossmember, so you will need to be careful cutting grinding welding in that area especially if you move the motor back and leave the lines disconnected till you get some longer fuel line (like I did)

if you pull the driveshaft out of the trans it will dump all the fluid on the ground.

if you move the motor back 8.5 inches you can get a one piece driveshaft from a reg cab shortbed truck and it works out perfect in length, so you can cut the existing driveshaft right behind the yoke in the trans and remove it. MAKE SURE you have the wheels chocked when you do this, cutting the driveshaft makes the truck freewheel, so park position in the trans doesnt mean park until you hook the driveshaft back up.