Mk2 jetta parts ,parts, wheels,interiors anything considered

I'm currently about to embark on a adventure of doing a full restoration on a 1986 Jetta gt,,
I'm not Volkswagen familiar and I'm looking for information ? Parts ideas
I want 2 keep the look as standard as possible was thinking of recommissioning the engine as a original also ?? Cam,carbs etc,, unless there's a good engine swop with minimal messing around? Also places 2 buy parts ? Coilovers ? Exhausts ? Genuine vw parts ? Replica parts things like interior switches ?? Interiors in general ? Brake upgrades willwood ? Any one who has some bits collecting dust? Do mk2 golf 5 door bits fit straight on ? Any one got any panels for sale? We're can I get some ?
What are Jetta gt worth ??rough - mint ???
Kind regards in advance