hey ya freaks! i need some answers! hope you fanatics could help me with my q’s.

so i have a 85 fz750 1fn. well at least thats what i could gather from reading some of the threads in this great forum. i have registered my vin and eng tag in the other thread but i dont exactly understand the differance between 1fn and 1ae!? ……..i think its different engine generations ? any way im in the slow slow painful broke ass restoration at the moment and i would like to get the frame pwder coated. my serial number is on a sticker on the right top of the frame! do guys just media blast this off? is there a stamping in the goose neck? friend of mine says there is. i dont want to lose this sticker. what do i do or whats the deal with pwd coating frames? see lots of questions! i m not very tech savy so im slow to load groose pics of my bike until i get something meaningful done!