If you restore your Bricklin in Texas then you must know that getting it rebuilt is not a wise decision. Below we are listing some main points regarding why used parts are better choice:

Cost Savings: they are way cheaper than the rebuilt or new engines.

Faster availability: Used engines may be found easily through different sellers unlike rebuilt engines who have a waiting period as it takes time to get them tested, cleaned and also parts that  are worn out are replaced. This will be done once the order comes. So it will take time.

OEM specifications: Used engines still have original factory parts just make sure to purchase from a reputable seller.