Ellison 4-5 for a 360 on a 320?

[Super_Dave]

Hi Folks,

I have an O-320 on my project and I have a friend with a new Ellison 4-5 throttle body he's willing to sell me for a good price. Although The 4-5 is designed for the 360, it physically fits on my 320. However I don't know all that much about the internals, other than the basics. I'd heard once you can go larger, but not smaller. Again, the only reason I'm considering it is the price tag makes it worth a look.

Please let me know your thought or experience.