Gun Parts Corporation in Hurley NY offers Schematics and some parts. I believe they are e-gunparts on the web.
The Ithaca-Lefever Nitro Specials with serial numbers between 158700 and 185399 were manufactured in 1924. Ithaca acquired the Lefever company in 1916, but manufactured two models of double-barrel guns (the Lefever Nitro Special and the Lefever A Grade) under the original company name between 1921 and 1947. Firearms expert Charles Gage estimated the collector value of another piece from that year to be between $200 and $500, depending on condition whether all parts are original. For more information, see Related Link, below.
I have a 16 guage nitro special with serial 149296. i have pinpointed it in the area of 1925-6. nitro specials were created from 1923-1946 serial numbers 100000-360000. since yours is 206508, it wold probaly be an early to mid 30's model. sadly, nitro specials aren't worth much. Lucky to get $300 off one, because a. it's not a real lefever (made by ithica, who bought the company out) and b. it was originally a cheap weapon. my advice: use it for hunting. my nitro shoots great and it's a fun gun. keep it in good condition. the're starting to make new parts for them, so the ones with all stock parts (like ours) will go up in PRICE
To get a parts breakdown you would need to take the shotgun into a gun store. The store will be able to provide an estimate, or order new parts.
Since we have no way of knowing what condition it might be in, we can only say anywhere from $250 for parts to $1400 for near-mint. sales@countrygunsmith.net
Not all the cars can have nitro but for those who can, you just have to buy the nitro parts.
Your local auto parts store or Ford dealership can get you a copy of the timing schematics for a 2002 Ford Focus 2.0. You can also contact the Ford company to get a copy of the schematics.
They allow machinists to reproduce parts read from schematics.
Numrich gun parts
There are lots of sites for Nitro RC parts online. One is www.nitrorcx.com. www.towerhobbies.com, www.rcplanet.com, and www.hobbypartz.com are a few other sites you can find parts online also.
You can buy the parts and the schematics to the rock-it-launcher from moira in craterside supply in megaton. Type your answer here...
nitro
You just need to do a little research, but there are some sites that sell nitro car parts such as; www.hobbytron.com/NitroRCCars.html or also www.andysautosport.com/auto_parts/dodge_nitro.html.