S-10 Clutch

Need some help. i am helping a friend to get his s-10 to lay out on 20's. i have done them before no problems but this one has a clutch. i understand it has to be moved up but how do you get the clutch linkage to move since it is in that cast box? sorry if this has been answered before didn't see it if it was.

MAN I DID ONE NO BODYDROP AND ALL I DID WAS CUT OUT THAT SECTION OF FIREWALL AND MOVE IT UP LIKE AN INCH AND LEFT THE LINKAGE ALONE ITS NOT THAT FAR SO THE LINKAGE WORKED FINE

thanks for the advice man i will try it