No kit, I just bought the headers, a guy local sold me the turbos, used but never taken out of the box for $200, the carb and hat was gulp $1000 bought new, the engine an old locked up 318, I unstuck it, turned the crank, thru a set of rods and pistons out of a used engine, and a rebuilt set of J heads. Cheap, but still money spent.
I bet I have about $2500 in everything, but I started from ground zero on the build.