Henry,
The SPFs and ERAs are both solid choices. The debate over which oneis best, has gone on at length on this site. I am biased as I own an ERA but at over 20 years old it is still in great shape and sound enough to run on the track as well as the street. If I were ever to get another fiber glass replica it would be an ERA without question!
3 of the 4 cars in the picture below are ERA cars.
http://www.clubcobra.com/photopost/s...t=1&thecat=500
Below is My 20 + year old ERA at Sears Point
http://www.clubcobra.com/photopost/s...t=1&thecat=500
Good luck, Pete C