Performance Parts

Is there a company that makes kits of performance parts such as.. Nitrous bottles, Long tube headers, MSD box.. stuff like that?

Swifty, there are far too many to list here.
Try searching google for something like Resin model car parts.
Most of the aftermarket detail parts would be cast in resin.

Start there, you should be able to find lots of places.

This site has alot of resin aftermarket parts from different manufacturerers and so on so forth/

http://stores.homestead.com/hstrial-RSchwartz1/StoreFront.bok

You can also try scratchbuilding your own parts with styrene sheets and leftover sprues.

oh, too many to name here, i suggest you go look up in US ebay under '1/24 resin or 1/24 machined or 1/24 casted' something like that...

where can i find resin.. does it come in puddy form for me to shape into what i need... ?

Resin comes as a liquid, usually in two parts which must be mixed together. Molds also come in multi-part liquids, and must be mixed together as well to activate the curing process. Resin can be a little pricey to get into, but if you have a lot to cast it will be cheaper in the long run than having someone else cast it for you.
Hobby shops sometimes carry resin supplies if you want to get some for yourself.

me...... i like shoping from the partbox.com they got a real nice list of things

hiroboy.com and stradasports.com both sell

well after searching No fender well long tube headers...ggrrrr