Screw on freewheel 12-28 (6 speed/7 speed ?)

[widowmaker]

Looking for a new freewheel for my 1985 Raleigh Clubman.

It currently has a Suntour Ultra 6, on a Maillard Hub but i need to replace this with something with more hill friendly gears along with a new chain.

According to Sheldon it is possible to fit a 7 Speed freewheel but i have also heard it is not possible :?

Anyone have one kicking around ?

Does not need to be nos/mint just with a few years left in it ?

 

[walkmanman]

Re:

Got a nice Shimano 7 speed you can have. Ratios should suit you nicely- the largest sprocket being a 28T one. It's just possible to see ware on the teeth but it's got more than a few years usage left in it.
PM if interested/any questions