Strange.
I went through the process of gathering correct parts to build a real Boss 351 and spent two years getting the correct PNs.
Shop!
Ebay, local swaps and networking.
Mine was very expensive, however, as I told someone else, people offer nuts money for a completed rare engine.
Saw a 427 out on ebay for $7,000.00, starting bid.
Good luck.
Just my $0.02
