sbp isis freewheel cranks a good upgrade?

Im getting a secondhand gng for the stinky…i know stock cranks are the terrible.

sick bike parts has these on there store now( they weren't a few months ago?)

http://www.sickbikeparts.com/catalog/product_info.php?cPath=23&products_id=192

they also have a isis 148mm bb to go with it. All together this would be WAY cheaper than the cyclone ISIS setup.

any thought?

BB cassette $46.99 at one and $47 at the other.
Cranks $37.99 at one and $38 at the other.

Thoughts? WAY cheaper is a bit of an exaggeration

148mm DH ISIS BB 444432T chainwheel freewheel crank set for 68mm and 73mm frame 117 USD from cyclone,

however he quoted me like 90 bucks on shipping or something.. where the sbp parts would be here in days for less than 10

I have newer version of GNG. There is support for one bearing on right side of BB.
http://endless-sphere.com/forums/viewtopic.php?f=28&t=52865&start=175#p961510
I am going probably to upgrade stock BB to some Octalink as ISIS doesn't have place for that bearing. http://www.chainreactioncycles.com/sk/en/shimano-es25-octalink-bottom-bracket/rp-prod34653
Edit: but first I need to find Octalink crank arm with thread for freewheel

i see, seems they finally did SOMETHING about the stock cranks. I will still upgrade to isis the second it goes. However I'm not sure that the 118 length will work.

I just purchased the 750w mid drive kit from SBP for my old GT LTS. If all goes well, I plan transferring the kit to an 83mm ISIS setup for my Giant Glory.

My buddy broke a square tapered BB years ago and now all my newer bike have hollowtech BBs. Unfortunately, there are no freewheel cranks for this standard, so ISIS it is.