[Jamo]

Oh--now you're asking technical questions?

The SPF comes as a turnkey minus--meaning drop in the motor, trans and a few other parts--and she's done. Prepainted as well. Some find it a bit long in the nose.

ERA can come that way or as a kit, which you build as you wish. The ERA's body and fitment is damn close to an originals, though the suspension borrows from other sources--jag rearends, etc.

Hopefully-owners of each will weigh in here and tell you their likes and dislikes. Having not owned either, I am speaking from observations from being around both makes.