hydro clutch swap questions

[qksilver]

I am converting a 78 1/2 burb I just bought to a 3/4 ton. I was given a freshly wrecked 87 3/4 pick up. I checked things out and pretty much everything will be easy to swap.

My question is I want to replace the turbo 350 with the granny gear 4 speed from the 87. The actual parts swap except for the clutch master cylinder and manual pedal set up.

Will the manual pedal set up from the 87 bolt in place of the 78 auto?

How to mount the clutch master cylinder to the firewall? From what I can tell with out unbolting things is that the firewalls are different.

Anybody done this? any tips or advice?

Thanks,
Steve