difference in a stage 3 snow injection water/meth kit between a 6.4 and a 6.0 version

[ac540]

im asking this because i found a kit for sale local and it is new but ordered for a 6.4 im gunna do a custon set up with it but was wondering if there was a difference in the kit for them to be motor supfic??

[Lilpooh]

I can't think of anything, maybe the instructions on mounting/installing.