Where to repair an old infiniti?

My old 93 infiniti needs the fuel injectors replaced and a damaged oil pan replaced. It backfires all the time and has no power. Infiniti dealer diagnosed the fuel injectors but repairs were steep and the place where I get my oil changed told me about the damaged oil pan ( I bottomed out on a chuck hole) What should this cost to repair and any ideas of a repair shop in Dallas? Car has 147000 miles on it.

A dent in the oil pan doesn’t mean you have to replace it. And a rough running engine doesn’t mean you have to change fuel injectors. Take your car to an independent repair shop for testing and repair. Your car needs more careful troubleshooting than it’s gotten.