KZ550 carbs/ mikunis/ WONT FIT NEED HELP

I bought these 24mm mikunis online for my 1981 kz550,the seller is well know and said that they fit all kz550 and 650
but the thing is my stock carbs are slightly smaller in size... the boot mounts are off 1/2 an inch on two holes of the carbs.. urgg! any ideas what can be done..?

650 and 750's swap...550 carbs do not...so if you purchased 650 carbs, they will not fit on a 550 motor.

this was the auction as it reads:
This auction is for a COMPLETELY REBUILT set of 24mm Mikuni Carbs for KZ550,KZ650, as well as other models. They are in excellent/rebuilt condition as you can see. Very hard to find them in this great condition. I have around 30 years experience in carb work and have just recently started to offer my work in this venue. I cut NO corners. They don't leave here until they are RIGHT!! There is not a spec of dirt in any passage/jet/slide/ etc/These have been hand/ultrasonically cleaned/new rubber/floats set/pilots set to factory specs...blah,blah,blah....Check out my feedback and bid with confidence...

The seller might be well known but he is wrong. As Mcdroid stated the 650's and 750's share the same carb spacing but the 550's are totally unique. Hopefully the guy will do the right thing and refund your money.

thanks for everyones help they are really nice carbs! but lucky me, I have a kz650 also lol so I guess Ill put them on there.

Besides the 550 carbs spacing being closer together, the carbs are shorter from front to rear. Not close to being the same physical size as a 650. Pretty much every auction on ebay for Kawasaki parts lists gazillions of models that used the part. Truth is very few Kawasaki's of different CCs used the same parts.

Looks like Spyder does nice work!

Got a set if you still need some
mjg15@aol.com