Fbb front cover on Rd 501?

[44FarmalM]

Before I go as far as buying the 501 when I can get a 450, will the fbb front cover fit on the 501 since the cam location has changed? I know about drilling the hole and adapting the crank snout but the cam location concerns me and I haven't been able to tell

 

[rustred]

still didnt hear a word from you about the W40.

 

[44FarmalM]

I apologise I ended up finding one closer to home, unless you can sell it to me for cheaper?