As i mentioned you can use these
http://www.ebay.com/itm/3Racing-Fron...item53e877259a for the front. They are made by 3racing, and is a good quality product ment for replacing LA302.
(68mm long) And they are half the price.
But if you want to use orginal kyosho, you might as well get the LA257 73mm axels and change to LA755 ZX-5 SP susp arms and ZX-5 SP knuckle & hubs and LA256 King Pin Set... Then its SP front suspension.