Fat-20 or 30 trem?

[RG-Head]

I just bought a cheap Ibanez RG120 to mod around, gonna be adding a white pickguard on, taking out the neck humbucker and keeping the bridge one only (the pickguard will cover the hole), changing the bridge stock pickup to a DiMarzio and changing the chrome Fat 20 or 30 (watever number) to a black tremelo bridge...

my question is, will a WILKINSON TREMOLO GUITAR (love the rollerballs on the bridge therefore string breakage will be less or none if i play hard) fit in the RG120 without any mods?

Thanks in advace!