[54 jimmy]

just my two cents but if that trans crossmember is factory then it may be set in the factory location. if so all you need to do is get the bell bolted up to the motor. set the motor and bell in the truck. secure the bell to the crossmember with the stock mounting hardware. hold the front of the engine up. put an angle finder on the intake to get that angle right. check dissy clearence. then if all is good break out the cardboard,sharpie and sissors to make your front motormount tempelate. this is all depending on if the motor sits where you want it and if you are not going to lower the burb and how low you go with it for ground clearence. as for the tranny once the above is done you can bolt the trans up and make any other additional trans mounts you want depending on you trans choice. just use the kiss method. keep is simple stupid. hope this helps.