I gave Brian a deposit and it was to be 8 - 10 weeks, but Brian is very in demand and it took longer. ....I'm pretty understanding of things like that and I really trust his work so I feel it was worth the wait.
These things take time.
I could have, and considered, a crate engine from Blueprint Engines if I wanted it quickly. I put a Blueprint stroker in my Stingray years ago and it was AWESOME! But, Brian built me EXACTLY what I wanted and I'm VERY happy I went with IMM Engines!