New Speedometer/Odometer?

[Chevyguy111786]

My odometer doesn't work. It counts miles but it's been rolled over a few times and the thousand doesn't turn till your at 500 and the and ten thousand turns ever x amount of miles. makes it had to figure out trips and gas and oil. my speedometer jumps. i'm about to swap engines and rebuild the tranny. so i was thinkin i will just put a new speedo and odometer in. what is a good brand to buy? the odometer isn't accurate anyway, so i would just start back at 0 cuz i'm not planning on selling the truck. Idea's on this? i would like it to at least match the other gauges which are stock. also. where can i get a temp gauge? BTW it's a 78 chevy 1/2 ton. gues ya might need that info