I though that choice would be easy, but then I started to read more and search. I'm 6' (last time I checked) and with helmet my only choice is A4?
The A4 is the perfect adjustable racing seat for tight spaces and minimal headroom applications.
How much headroom would I have with LG1 or CR1 and how to they compare to a stock seat? Without the helmet I can raise stock seat almost all the way up.