Some questions about engines

So as some of you know I'm looking at buying a 92 VFR in the next two or three weeks. the bike i'm looking at is a California Model (I live in PA) and has 45K miles.

is there a guide somewhere on the compents that make it a California model (all the emmissions stuff) so that if i ever wanted to remove it I could?

also does the gen 4 motor work in the gen 3 bike thinking about the future and stocking up on back up parts so that in the event that something happens I can swap it and fix it while still having something to ride.

Where could I find a solo seat cowel, the bike I;m getting doesn't have one, was lost somewhere in the last 20 years.

thanks in advance

 

also I did search the forum but didnt find anything that specifally answered my questions, but i'm sure guys will find a thread that i missed :crazy:

 

oh and another thing what is the best service manual to get for this bike, other then asking you guys how to do everything?

 

You'll get the seat cowl right after me. I've been searching for 3 years.

 

i want to say the California has softer cams and leaner jetting. theres no cats until 2000, but probably an evap canister and maybe pair valves.
i think the 3rd and fourth gens are really similiar, as the exhausts are interchangable, but the 3rd gens are tuned a little harder with 36mm carbs vs the 4th gens 34mm. but i have a vtec so everything i just said should be taken with a grain of salt. lol

 

Different mounting setup so gen4 engine won't go into gen3 chassis i believe.