Substituting Hyperextensions?

Hi, today is my first day of Bill Starrs 5x5 Linear program, and i’m sat down to write what poundage and stuff I need to do to take to the gym with me, but i’ve hit a snag. My gym has no facilities for hyperextensions, i was wondering if it’s possible to subsitute this exercise for another? IF it is, can anyone suggest some alternatives?

Regards,
Sarps

Goodmornings.

GM’s, stiff-legged deads, romanian deads, glute-ham raises…back extension machine…

Changed for stiff legged dead lifts, thanks guys.

Forget the exercise’s exact name; it’s more or less a one legged DB deadlift.
Same way golfer’s pick up their balls; The “lazy” leg is kept straight and away as you go down.