Like what model came out with all four disk brakes standard?
You must be asking about installing a gas fire log or fireplace insert??. If you live in the country and have LP for your type of gas, then you can use flexible copper, usually with flared fittings. If you live in the city, or a rural area where you have natural gas to your home, then you'll have to use black pipe to get you close enough to the unit to hook in a accordian type flex line, they usually go up to 48, that will take you to the gas control valve. They're usually made of either brass or stainless steel.
check with your gas company. here you are not allowed to use copper. has to be black steel or flex line tubing. you should be able to get stainless steel flexible tubing at the hardware store. make sure you have the proper fittings and sizes. use soapy water to check for leaks after you are done.
4 wheel disk brakes only came standard with the ABS option (assuming you have stock 14 rims, the stock 13' rims came with drums on the rear regardless of whether the Neon had ABS or not) on the regular Neon models. 4 wheel disks came standard on all R/T and ACR models.
