Can you tell us more about the hch? These cars typically have more ima issues with the battery and can be had for a deal and are not too difficult to fix. This is assuming you do not mind building or buying a grid charger or using a hobby charger to recondition the sticks.
Also some of these cars have 2 spark plugs per cylinder. Cause of the angle of the right side plugs next to or under the firewall they are overlooked and replacing those can lead to improved performance of the vehicle.
