The needle size is so different, I'm not sure how you could substitute and still follow the pattern. If it's for a scarf, though, you could just either make it bigger or decrease the number of stitches to get it to the size you want.
Or if you can go down from the 36 needles to get a gauge of 2 stitches per inch, then you can follow the pattern.
"Trust the pattern!"
Time flies like an arrow, but fruit flies like a banana.
Hop aboard while we follow the cloud-covered van of knitting harmony, man!! Woooo!! --Hedgehog
IngridKH on Ravelry