You would have to use 2001-2005 zr-7 intake boots to fit cvk32's to your bike. RS34 or stock kz boots are not the proper size or offset.
CV carbs and flatside carbs can't be compared by intake sizes. 750 motors can use vm28's, smoothbore 29's, cr29's, cvk32's, bs34's, fcr31's, rs34's.....etc
Because there are at least three different kinds types of carbs (flatsides, cv and roundslides) they all react and fuel differently when attached to the same motor. A rs34 provides way more fuel and in a very different way than a stock cv34 or bs34. So you can't determine the proper carb size by what it had stock, but by the style of carb and your particular engine.
The rs34 is best for a bored out, big valve, ported, hot cam 750 motor. A near stock engine dosen't have a strong enough vacuum signal to properly draw/meter fuel from a carb that big. It will bog all over the power band.
IF you decide on the cvk32 route, here are some helpful links to the cheapest quality rebuild kits I have used:
Yes... The kits are for a zg1000 Concours, but they use cvk32's also. ( for more torque )
www.murphskits.com/product_info.php?cPath=1_94&products_id=130
www.murphskits.com/product_info.php?cPath=1_94&products_id=414
And if you want a jet kit that is designed specifically for use with (the kz/gpz/zr750 engine) an airbox and 4-1 or pod filters and 4-1 exhaust and dosen't require drilling the slides (like dynojet) Factory Pro has the best one. They aren't cheap, but they are worth it.
www.factorypro.com/Prod_Pages/prodk75.html
(starcycle.com will special order any Factory Pro jet kit for way less $$ than Factory Pro sells it. Just call them and order it by phone, as they no longer list the zr750 kits on their website.)
Just food for thought