HELP Cracked Firewall?

[DieselChemist]

When I push my clutch in the firewall moves considerably. I looked at the outside firewall and no crack. But inside the truck, above the top slave cylinder bolt, were there is a joint in the firewall, it looks kind of rusted and moves. Is this the typical firewall crack. I know you can buy two different kits, which one would I need, and what are the part numbers, I am assuming I need to get it from ford.
Thank You
Bill

 

[87F250]

Go right for the larger kit. Part number is E8TZ-7K509. I went through Fordparts.com and got a relatively good price of about 108.00 bucks. I just fixed my 87 with this kit last week and it turned out great with the clutch pedal action back to normal.

 

[sle2115]

Yep, the small kit is preventative, the big kit is repair. If you want a copy of the TSB, PM me your email addy, or email me, I'll send it to you. www.fordparts.com was the best price I found, less than half what my local stealership wanted for it ($108 versus $238).