I have a 92 CB 400 superfour FII N, my standard shocks were 325 pin to pin, I have fitted showa shocks off a CB 750 of the same vintage & they fitted no prob's.
They are 355mm pin to pin & a fair bit firmer but this suit's me @ 16 stone

& I like the jacked up look & the slitely quicker steering, I just have to use a longer rear brake pipe mount on the swinger & a 1" thick piece of timber under the centre stand

, But that's it.
I am currently trying to upload some pic's from photobucket to no avail

But check out the Bike mag/ Brunttingthorpe pic's, mine's the blue Superfour
You should be fine with 335 shocks, Hope this helps Paul.
