Good stuff from MArk re the engine cover.
You also asked about hood props. Classic Roadsters took the opposite approach to a “prop” for the front hood. CR’s hood has a u-channel running front to back to help stiffen the fiberglass. They recommended using a shoulder belt from the donor car (or a new one), rivet or bolt the metal attachment end to the middle of the firewall and attach the other end to the u-channel near the center of the hood. The length is enough to allow the hood to open beyond 90 degrees, and short enough to keep it from hitting the head-light bucket or fender. Concept works well. I can post pics if you want.
Former Owner of a 1981 Classic Roadsters Ltd. Duchess (VW)
2005 Intermeccanica Roadster
If you own a TDr and are not in the Registry, please go to https://tdreplica.com/forums/topic/mg-td-replica-registry/ and register (you need to copy and paste the link)