seat for kz1000 p

can anyone tell me what size & year seat will fit my '91 kz1000p? it came with the stock solo seat.i hate to pull it off but i need room for a passenger.
the guy i bought it from said it had to be off a kz1000 ltd, but didnt know what year.
i'm trying to figure out how to use the ltd. seat and keep the trunk.

thanks

'91 kz1000p

i have a 1000 seat pan if you want it measured or pics let me know

to be honest i dont what the hell i need.
i guess the main thing i worried about is the mounting brackets, but any measurements would help.
thanks,
bill