juneracer Rick the best thing is to call ERA and talk to Peter P. or Bob P. They might have a folder on the car and the build. You need the ERA serial #, It's no the frame.
If normal driving, the car has gone 11K miles. Change the
oil every 2-3,000 miles with a good
oil of 10-40 or 15-40 and add 1 quart to over fill because of slow returns of
oil from the heads. A 1/2 bottle of Lucas oil suppliment wouldn't hurt either.
As for gas and meth, It does eat any rubber hose over time and harden them. I got 15 years out of mine before having to replace. Use a plus gas and see how the motor runs. If OK stay with this, if it pings and makes driving issues go to a high octane.
Repack front wheel bearings, check the brakes and check all fluid in the trans and rearend.
AS for shifting points, the less higher RPMS turned the longer the motor should last. IF it's a hydro lifter motor, most runout of steam about 5,200 and start to hydro lock the lifters. 5,500 is a safe max rpm. Go pass this and you will feel the motor nose over and have no more power.
For motor upgrades, pull a rocker cover and check to see that the shafts have end supports. If not would upgrade them to a better system. Leave the rest alone and drive. How are the oil leaks, and under the car after a road test? Cobras are like Harleys and mark their spots.


Rick L.