Two leaky valve stem seals will not cause it to burn a quart in 600 mi. It has deeper problems. And the seals are spring loaded rubber seals. Almost the same part since 1996
Race red /*white here. 14,000 mi stopped once in a parking lot. The polite officer wanted to take a picture. Also have a 178 hp 14,000 rpm Suzuki GSXR that stomps the Shelby, no stops.
I love my '16 tech! I wanted the seats, electronics. First hpde it went limp in six laps. I went home and ordered the parts and added trans and diff coolers. Three days to install the parts. 5 tracks days and 11,000mi later it still runs great. $2000 in parts and never looked back. That said...
Buy a Chrysler K car, paint it day glow orange. Just to remind what great historic cars they have built. Calling it a beater would be an insult to Chevy vega's.