Welcome to Hybridz! We are glad to have you here. There are plenty of people here more knowledgeable than I, but I am going to address a couple things...
I was not made aware the made a radiator cooler, what do you mean exactly? Do you have a Z or a ZX(they are different!). I am assuming you have ZX since that is what it states in the title. Is it a manual transmission or an automatic transmission that you have now? Why would you go to carbs? Nostalgia? Power? Are you good with carbs? What are your big plans for this project? If it is a ZX then don't downgrade by switching to an older dizzy. Please help us help you.
Lastly, please use GOOGLE SEARCH, read through a couple of the stickies and download the FSM http://www.xenons130.com/reference.html. Thank you for browsing hybridz! We are here to help, please enjoy.