I went with a KC 427W for the following reasons:
- all assembly done at Keith's shop (quality control)
- for same price as a Roush the KC included a DART aluminum block and shipping.
- seems to be all hi quality parts
When the engine showed up with shipping damage to the carb and
oil pan KC immediately shipped new ones. No hassles. Also, good service - answered all my many questions.
After 3000 miles the only problem is a very small/occasional
oil leak (rear main, I think). Engines has tons of torque and power even though I had it slightly de-tuned for the street (554 hp and ~580 ft-lbs at the fly wheel). Very pleased with it. Does run a bit rough under low speed cruise/no load/coasting but not bad - expected with this much power. By the way - I get an honest 16 MPG with a .83 5th gear & 275/40R18s.
Matt