I have no personal or first hand experience with Blueprint engines. I am on a pretty busy engine swapped Porsche faceholebook group (90% of the group are doing LS swaps into 911's).
The opinion there is weighed heavily against Blueprint engines. The main builder who does these swaps professionally has had at least two blueprint LS engines with major problems and another guy finally sold the 3rd replacement engine he wrangled out of them and bought a GM crate motor.
Internet hearsay and if you don't road race the car on the track it will probably be fine, just do some research.
That being said I also am in the market for an LS engine and so am interested in recommendations as well. TBH given how ubiquitous these seem to be, I was a little surprised I couldn't find more vendors that I liked and that weren't trying to sell $30k engines.
Most of the guys in that swap group just end up buying the GM 495hp crate motor and its a good option, but I wanted something a little bit more and different (just like everyone else) so still looking.
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