d16a6 in a hf

Ok i sold my crx si engine to my friend who has an Crx Hf. Does he need to change his hubs? Cause when my other friend was putting a zc motor in his dx and he bought a new arm. Well they gave him the wrong arm and i asked why. he said its from an hf. He said he needed one from a 5 speed dx or an si. So i was figuring that for my friend with the HF since i'm thinkin the crx si axles won't fit the hub? Please help.Thanks

there's two ways to go about it...you're friend can keep his stock hubs and just use the hf axles...they fit just fine into the si tranny.... only problem is that you've still got those puny little hf brakes..

the other way is to swap out the hubs to si/dx and use the si axles... then he'll get some bigger brakes and also have the option to go bigger in the future...

but the hf axles will work fine....

Hey thanks man. Is there anyway to get the hub out? Any special tools i can go get? That hub is a bitch to take out!:)