@MusbJim I have a stack of different sized pieces of wood that I use for all kinds of different jobs. It's like my own adult Lincoln log set. Use more brain, less muscle.
@aircooled Ed's front jack points are more period correct for the 550. If your starting from scratch, you can do whatever you want.
Since my car was already built, I had to go another direction with my jack/tow points. Mine are farther under, but now seeing what Ed did, it's given me an idea to move them out some so that installing a tow bar would be more realistic. Currently my jack/tow points have just 3.25" clearance to the ground. Here is a link to what I did. https://www.speedsterowners.co...nt-spyder-tow-points I haven't built a tow bar yet.