Cant find a reliable LSX builder. Anybody know of one?

[69/RS]

I have been looking for a reliable engine builder for a while now. I have called a bunch of places, talked to builders on the phone, even met people in person.
These builders either don't respond with an estimate after being asked at lease twice or there bid is almost double what it should be.
I was refereed a builder by the shop working on my car and they said there communication was poor but put out a good product so after communicating with them....poorly for the past 2 month .I decided to deposit $27K into the builders account but they will just not respond to my final 3 simple questions. I cant get them to respond when I'm about the give them a ton of money....I can only imagine what it would be like if they had my money.
I need this engine done pretty soon and looking for a guarantee build date.
I have the build sheet to make there job easier. Looking for a turn key built 427 LSX motor with F1R pro charger. I need everything! All the way down to the harness. Thanks in advance for your advise.