some bolt length questions

[qksilver]

I am piecing a truck together so i can transport the all parts at one time.
I am bolting the fleetside bed, cab and a front clip to a rolling frame.

I am going to use 2x4 blocks for the cab and core support mounts by drilling holes thru them and using them between the frame and body mounts.

I pretty much got rid of my buckets with bolts , so I need approximate lengths of the bolts used to secure the front & rear part of the bed, cab mounts and core support. the two by four blocks i am using are very close to the thickness of the rubber mounts. If I was in perfect shape and could run back and forth to the hardware store this could be done.

If possible a close measurement would save the bending, twisting, kneeling and the worst, trying to get back up off the floor!

thanks,
Steve