Board Thread:Game Discussion/@comment-33905330-20190204233225/@comment-35410192-20190205024059

Based on my quick calcuations, Superfast LTS can be completed with upgrades at 5353334 (PR 70.7) at the cost of 538 gold, or 458 after 80 gold reward.

I completed only stage 1 upgrades for the Inheritance SE and got as far as I could. I recall not liking the way the Superfast handled, but I've since seen comments saying that it improves with more upgrades.