What is the fine-grained topic of the following text: I'm still trying to decide whether to continue with my intention to use Prelude (5th gen) parts for mine or stick by-the-book with Miata, but I made arrangements to sell my 3rd gen Prelude shell this weekend: I'm worried about using a platform that is so hard to find parts for as that one. Only return the topic.
Deciding between using Prelude or Miata parts for car modifications