I don't know if banks still require it, but at least in 1999 you had to get the kit registered with N number as part of financing.  That N number may have a lean placed against it.   Changing the N number to what you want is easy, but the problem really is that the registration shows the builders name, and you need to have your registration and air worthiness certificate to be the same (same manufacture).  You should leave the N number as is since it's not really your N number for "your" plane and apply for your own registration using whatever serial number you want. You are the manufacture', so you set what the serial number and the type aircraft it is.  

Ron Galbraith

I bought a kit second hand back in 05 from someone.  And I was digging thru the paperwork and found that it was registered with the FAA and has a tail number.  I googled it and its still showing as a registered N number with my kit serial number. I have no idea why anyone would register a kit.  Registration was never transfered to me when I bought it.  Only the transfer paperwork with Lancair was done.

I dont want it registered as this tail number anyway.  

So when I go to apply for new registration when its finished can I apply with my chosen N number and use the same serial number?  Or am I gonna have problems with this. Can I just use a made up serial number? Also the current serial has a 320 in it for the designation of it as a 320.  I have a built it as a 360 can I change that portion of the serial number to say 360?

Any advice would help. Thanks