What mods are needed to install 262 husky onto a 257 husky

[llland]

I have been told this is possible and will improve the performance sustantially

 

[hamish]

If your 257 is a runner, don't bother going through the expense of converting it to an 262xp. Yes it would make a difference in performance, but not so drastic to justify the expense. Save your money and get a 372 if you want more, then you'll have a drastic increase in performance.