Bigger throttle body 420A?

anyone in here knows of any other throttle or aftermarket theottles can fit onto the 420a? I know they can bore strait though for a full 52mm, but can it go bigger by using the 1g throttle plate for a 62mm bore?

Their are aftermarket ones like http://www.modernperformance.com/dcx/eclipse_60mm_mpxtb.shtml . But the problem with that is that its too big for non turbo cars. I sould suggest getting it bored out to 56mm. heck the boards over at www.2gnt.com they know loads about this stuff